ModuleUpdate: skip disabled/hidden folders (#1070)

* ModuleUpdate: skip non-worlds

* ModuleUpdate: don't skip _* folders

- _* folders may be used for libraries
- this means to properly disable a world, it has to be renamed with a preceding `.`

ModuleUpdate.py

@@ -13,6 +13,8 @@ update_ran = getattr(sys, "frozen", False)  # don't run update if environment is
 
 if not update_ran:
     for entry in os.scandir(os.path.join(local_dir, "worlds")):
+        # skip .* (hidden / disabled) folders
+        if not entry.name.startswith("."):
             if entry.is_dir():
                 req_file = os.path.join(entry.path, "requirements.txt")
                 if os.path.exists(req_file):