Make dependency get-size2 truly optional in ruff_python_ast (#19052)

Gates all uses of `get-size2` behind the feature `get-size` in the crate
`ruff_python_ast`. Also requires that `ruff_text_size` is pulled in with
the feature `get-size` enabled if we enable the same-named feature for
`ruff_python_ast`.

crates/ruff_python_ast/Cargo.toml

@@ -41,7 +41,10 @@ serde = [
     "dep:ruff_cache",
     "compact_str/serde",
 ]
-get-size = ["dep:get-size2"]
+get-size = [
+    "dep:get-size2",
+    "ruff_text_size/get-size"
+]
 
 [lints]
 workspace = true

crates/ruff_python_ast/src/node_index.rs

@@ -19,7 +19,8 @@ where
 ///
 /// This type is interiorly mutable to allow assigning node indices
 /// on-demand after parsing.
-#[derive(Default, get_size2::GetSize)]
+#[derive(Default)]
+#[cfg_attr(feature = "get-size", derive(get_size2::GetSize))]
 pub struct AtomicNodeIndex(AtomicU32);
 
 impl AtomicNodeIndex {

crates/ruff_python_ast/src/nodes.rs

@@ -875,6 +875,7 @@ bitflags! {
     }
 }
 
+#[cfg(feature = "get-size")]
 impl get_size2::GetSize for InterpolatedStringFlagsInner {}
 
 /// Flags that can be queried to obtain information
@@ -1462,6 +1463,7 @@ bitflags! {
     }
 }
 
+#[cfg(feature = "get-size")]
 impl get_size2::GetSize for StringLiteralFlagsInner {}
 
 /// Flags that can be queried to obtain information
@@ -1880,6 +1882,7 @@ bitflags! {
     }
 }
 
+#[cfg(feature = "get-size")]
 impl get_size2::GetSize for BytesLiteralFlagsInner {}
 
 /// Flags that can be queried to obtain information