[misc] CI hygiene: enforce __main__ entry, drop silent-skipped tests, fix rerun-test protoc (#23305)

scripts/ci/check_registered_tests.py

@@ -34,7 +34,7 @@ def main() -> int:
     errors = []
     for f in files:
         try:
-            registries = ci_register.ut_parse_one_file(f)
+            registries, _has_main_entry = ci_register.ut_parse_one_file(f)
             if len(registries) == 0:
                 errors.append(f)
         except Exception:

scripts/ci/utils/ci_coverage_report.py

@@ -35,7 +35,7 @@ def collect_all_tests(registered_dir: str) -> list[CIRegistry]:
 
     for file in sorted(files):
         try:
-            registries = ut_parse_one_file(file)
+            registries, _ = ut_parse_one_file(file)
             all_tests.extend(registries)
         except Exception as e:
             print(f"Warning: Failed to parse {file}: {e}", file=sys.stderr)