[BUG] Websocket connection initiated by front end even if not enabled in back end #3939

Describe your context
Websockt connections are created even if unused.

dash                 4.4.0

Tested in Edge and Firefox.

Describe the bug

I am not sure if this is intended behaviour or a bug. The Dash front end attempts to established a WS connection even if websocket_callbacks=False is set in dash.Dash and no callbacks are set to use websockets.

Expected behavior
It would be preferable that no connection is attempted unless the app is configured to actually use websockets.