[ruff] Avoid false positives for RUF027 for typing context bindings. (#15037)

Closes #14000 

## Summary

For typing context bindings we know that they won't be available at
runtime. We shouldn't recommend a fix, that will result in name errors
at runtime.

## Test Plan

`cargo nextest run`

crates/ruff_linter/resources/test/fixtures/ruff/RUF027_1.py

@@ -68,3 +68,9 @@ def negative_cases():
     @app.get("/items/{item_id}")
     async def read_item(item_id):
         return {"item_id": item_id}
+
+    from typing import TYPE_CHECKING
+    if TYPE_CHECKING:
+        from datetime import date
+
+    t = "foo/{date}"