style(installer): make priority param keyword-only

Add bare * before priority parameter to enforce keyword-only usage,
satisfying Ruff FBT rules for boolean parameters.

Author: mfranczel

installer/module/virtual_environment.py

@@ -84,6 +84,7 @@ def import_package_bundle(
         self,
         bundle_site_package_path: str,
         condition_env: Optional[str] = None,
+        *,
         priority: bool = False,
     ) -> None:
         """