[`flake8-use-pathlib`] Fix `PTH211` autofix (#20049)

## Summary
Part of #20009

crates/ruff_linter/src/rules/flake8_use_pathlib/rules/os_symlink.rs

@@ -1,4 +1,3 @@
-use anyhow::anyhow;
 use ruff_diagnostics::{Applicability, Edit, Fix};
 use ruff_macros::{ViolationMetadata, derive_message_formats};
 use ruff_python_ast::ExprCall;
@@ -105,6 +104,14 @@ pub(crate) fn os_symlink(checker: &Checker, call: &ExprCall, segments: &[&str])
         return;
     };
 
+    let target_is_directory_arg = call.arguments.find_argument_value("target_is_directory", 2);
+
+    if let Some(expr) = &target_is_directory_arg {
+        if expr.as_boolean_literal_expr().is_none() {
+            return;
+        }
+    }
+
     diagnostic.try_set_fix(|| {
         let (import_edit, binding) = checker.importer().get_or_import_symbol(
             &ImportRequest::import("pathlib", "Path"),
@@ -122,16 +129,14 @@ pub(crate) fn os_symlink(checker: &Checker, call: &ExprCall, segments: &[&str])
         let src_code = locator.slice(src.range());
         let dst_code = locator.slice(dst.range());
 
-        let target_is_directory = call
+        let target_is_directory = target_is_directory_arg
-            .arguments
-            .find_argument_value("target_is_directory", 2)
             .and_then(|expr| {
                 let code = locator.slice(expr.range());
                 expr.as_boolean_literal_expr()
-                    .is_some_and(|bl| !bl.value)
+                    .is_none_or(|bl| bl.value)
                     .then_some(format!(", target_is_directory={code}"))
             })
-            .ok_or_else(|| anyhow!("Non-boolean value passed for `target_is_directory`."))?;
+            .unwrap_or_default();
 
         let replacement = if is_pathlib_path_call(checker, dst) {
             format!("{dst_code}.symlink_to({src_code}{target_is_directory})")

crates/ruff_linter/src/rules/flake8_use_pathlib/snapshots/ruff_linter__rules__flake8_use_pathlib__tests__preview__PTH211_PTH211.py.snap

@@ -1,7 +1,7 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_use_pathlib/mod.rs
 ---
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
  --> PTH211.py:5:1
   |
 5 | os.symlink("usr/bin/python", "tmp/python")
@@ -11,7 +11,17 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
   |
 help: Replace with `Path(...).symlink_to(...)`
 
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+ℹ Safe fix
+2 2 | from pathlib import Path
+3 3 | 
+4 4 | 
+5   |-os.symlink("usr/bin/python", "tmp/python")
+  5 |+Path("tmp/python").symlink_to("usr/bin/python")
+6 6 | os.symlink(b"usr/bin/python", b"tmp/python")
+7 7 | Path("tmp/python").symlink_to("usr/bin/python")  # Ok
+8 8 | 
+
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
  --> PTH211.py:6:1
   |
 5 | os.symlink("usr/bin/python", "tmp/python")
@@ -21,7 +31,17 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
   |
 help: Replace with `Path(...).symlink_to(...)`
 
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+ℹ Safe fix
+3 3 | 
+4 4 | 
+5 5 | os.symlink("usr/bin/python", "tmp/python")
+6   |-os.symlink(b"usr/bin/python", b"tmp/python")
+  6 |+Path(b"tmp/python").symlink_to(b"usr/bin/python")
+7 7 | Path("tmp/python").symlink_to("usr/bin/python")  # Ok
+8 8 | 
+9 9 | os.symlink("usr/bin/python", "tmp/python", target_is_directory=True)
+
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:9:1
    |
  7 | Path("tmp/python").symlink_to("usr/bin/python")  # Ok
@@ -33,7 +53,17 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
    |
 help: Replace with `Path(...).symlink_to(...)`
 
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+ℹ Safe fix
+6  6  | os.symlink(b"usr/bin/python", b"tmp/python")
+7  7  | Path("tmp/python").symlink_to("usr/bin/python")  # Ok
+8  8  | 
+9     |-os.symlink("usr/bin/python", "tmp/python", target_is_directory=True)
+   9  |+Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=True)
+10 10 | os.symlink(b"usr/bin/python", b"tmp/python", target_is_directory=True)
+11 11 | Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=True)  # Ok
+12 12 | 
+
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:10:1
    |
  9 | os.symlink("usr/bin/python", "tmp/python", target_is_directory=True)
@@ -43,6 +73,16 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
    |
 help: Replace with `Path(...).symlink_to(...)`
 
+ℹ Safe fix
+7  7  | Path("tmp/python").symlink_to("usr/bin/python")  # Ok
+8  8  | 
+9  9  | os.symlink("usr/bin/python", "tmp/python", target_is_directory=True)
+10    |-os.symlink(b"usr/bin/python", b"tmp/python", target_is_directory=True)
+   10 |+Path(b"tmp/python").symlink_to(b"usr/bin/python", target_is_directory=True)
+11 11 | Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=True)  # Ok
+12 12 | 
+13 13 | fd = os.open(".", os.O_RDONLY)
+
 PTH211 `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:17:1
    |
@@ -70,12 +110,12 @@ help: Replace with `Path(...).symlink_to(...)`
 16 16 | 
 17 17 | os.symlink(src="usr/bin/python", dst="tmp/python", unknown=True)
 18    |-os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=False)
-   18 |+Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=False)
+   18 |+Path("tmp/python").symlink_to("usr/bin/python")
 19 19 | 
 20 20 | os.symlink(src="usr/bin/python", dst="tmp/python", dir_fd=None)
 21 21 | 
 
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:20:1
    |
 18 | os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=False)
@@ -87,7 +127,17 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
    |
 help: Replace with `Path(...).symlink_to(...)`
 
-PTH211 `os.symlink` should be replaced by `Path.symlink_to`
+ℹ Safe fix
+17 17 | os.symlink(src="usr/bin/python", dst="tmp/python", unknown=True)
+18 18 | os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=False)
+19 19 | 
+20    |-os.symlink(src="usr/bin/python", dst="tmp/python", dir_fd=None)
+   20 |+Path("tmp/python").symlink_to("usr/bin/python")
+21 21 | 
+22 22 | os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=     True    )
+23 23 | os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory="nonboolean")
+
+PTH211 [*] `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:22:1
    |
 20 | os.symlink(src="usr/bin/python", dst="tmp/python", dir_fd=None)
@@ -98,6 +148,14 @@ PTH211 `os.symlink` should be replaced by `Path.symlink_to`
    |
 help: Replace with `Path(...).symlink_to(...)`
 
+ℹ Safe fix
+19 19 | 
+20 20 | os.symlink(src="usr/bin/python", dst="tmp/python", dir_fd=None)
+21 21 | 
+22    |-os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=     True    )
+   22 |+Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=True)
+23 23 | os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory="nonboolean")
+
 PTH211 `os.symlink` should be replaced by `Path.symlink_to`
   --> PTH211.py:23:1
    |