Address review

Author: sobolevn

Tools/build/compute-changes.py

@@ -15,8 +15,8 @@
 from pathlib import Path
 
 TYPE_CHECKING = False
-if False:
-    from collections.abc import Set  # type: ignore[unreachable]
+if TYPE_CHECKING:
+    from collections.abc import Set
 
 GITHUB_DEFAULT_BRANCH = os.environ["GITHUB_DEFAULT_BRANCH"]
 GITHUB_CODEOWNERS_PATH = Path(".github/CODEOWNERS")