More pywin32 stub completion (#9308)

Completed based on usage of the following libraries in mypy_primer:
- apprise
- comtypes
As well as some of the most popular libraries that use both pywin32 and mypy (all over 1k stars on github):
- certbot
- anki
- flexget
- monkey
- twisted
- salt

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stubs/pywin32/pythonwin/win32ui.pyi

@@ -122,7 +122,7 @@ def MessageBox(message: str, arg, title: str | None = ...): ...
 def OutputDebugString(msg: str) -> None: ...
 def EnableControlContainer(): ...
 def PrintTraceback(tb, output) -> None: ...
-def PumpWaitingMessages(firstMessage, lastMessage): ...
+def PumpWaitingMessages(__firstMessage: int = ..., __lastMessage: int = ...) -> int: ...
 def RegisterWndClass(style, hCursor: int = ..., hBrush: int = ..., hIcon=...) -> str: ...
 def RemoveRecentFile(index: int = ...) -> None: ...
 def SetAppHelpPath(): ...