[`flake8-logging`] Add fix safety section to `LOG001` (#18841)

Part of #15584

This adds a `Fix safety` section to [direct-logger-instantiation
(LOG001)](https://docs.astral.sh/ruff/rules/direct-logger-instantiation/#direct-logger-instantiation-log001).

The fix/lint was introduced in #7397
No reasoning is given on the unsafety in the PR/code
Unsafe fix demonstration:
[playground](https://play.ruff.rs/72e7277e-a9db-4cd9-9afb-2c56ef2db361)
```py
import logging
logger = logging.Logger(__name__)
```

## Test Plan

<!-- How was it tested? -->

N/A, no tests/functionality affected

---------

Co-authored-by: Dylan <dylwil3@gmail.com>

crates/ruff_linter/src/rules/flake8_logging/rules/direct_logger_instantiation.rs

@@ -36,6 +36,10 @@ use crate::{Edit, Fix, FixAvailability, Violation};
 /// logger = logging.getLogger(__name__)
 /// ```
 ///
+/// ## Fix safety
+/// This fix is always unsafe, as changing from `Logger` to `getLogger`
+/// changes program behavior by will adding the logger to the logging tree.
+///
 /// [Logger Objects]: https://docs.python.org/3/library/logging.html#logger-objects
 #[derive(ViolationMetadata)]
 pub(crate) struct DirectLoggerInstantiation;