Fix linting error

Author: ian-Liaozy

sdks/python/apache_beam/runners/interactive/display/pipeline_graph.py

@@ -25,11 +25,12 @@
 import collections
 import logging
 import threading
+from typing import Any
 from typing import DefaultDict
 from typing import Dict
 from typing import Iterator
 from typing import List
-from typing import Any, Optional
+from typing import Optional
 from typing import Tuple
 from typing import Union