Make prek hook to check shared distributions resilient to empty dirs (#59972)

Author: amoghrajesh

scripts/ci/prek/check_shared_distributions_structure.py

@@ -213,6 +213,12 @@ def main() -> None:
     all_ok = True
     for shared_project in SHARED_DIR.iterdir():
         if shared_project.is_dir():
+            # Not having a pyproject.toml means no distribution here, so using it as a marker to skip
+            if not (shared_project / "pyproject.toml").exists():
+                console.print(
+                    f"\n[yellow]Skipping empty directory:[/yellow] [magenta]{shared_project.name}[/magenta]"
+                )
+                continue
             ok = check_shared_distribution(shared_project)
             if not ok:
                 all_ok = False