Use `is_read_only` to allow/forbid to update Worker Activity

arkindex_worker/worker/__init__.py

@@ -136,7 +136,7 @@ class ElementsWorker(
         Whether or not WorkerActivity support has been enabled on the DataImport
         used to run this worker.
         """
-        if self.args.dev:
+        if self.is_read_only:
             return False
         assert (
             self.process_information