Fix type hints with default nulls - all remaining

Used regex for search:
: \w+ = None

Author: DeflateAwning

py/selenium/webdriver/common/actions/wheel_actions.py

@@ -23,7 +23,7 @@
 
 class WheelActions(Interaction):
     def __init__(self, source: Optional[WheelInput] = None):
-        if source is None:
+        if not source:
             source = WheelInput("wheel")
         super().__init__(source)