Ignore .github dir in package test (#5098)

Added comments for ignore code

test/general/test_packages.py

@@ -8,7 +8,12 @@ class TestPackages(unittest.TestCase):
         to indicate full package rather than namespace package."""
         import Utils
 
+        # Ignore directories with these names.
+        ignore_dirs = {".github"}
+
         worlds_path = Utils.local_path("worlds")
         for dirpath, dirnames, filenames in os.walk(worlds_path):
+            # Drop ignored directories from dirnames, excluding them from walking.
+            dirnames[:] = [d for d in dirnames if d not in ignore_dirs]
             with self.subTest(directory=dirpath):
                 self.assertEqual("__init__.py" in filenames, any(file.endswith(".py") for file in filenames))