Option to make Leave Room act as Leave Room and Forget

### Your use case

#### What would you like to do?
I would like to have rooms forgotten automatically when I leave them.

#### Why would you like to do it?
I find the history/forget thing to just be clutter in the UI. (subjective)

At least with my current usage, I forget a room 100% of the time after leaving it. Doing this manually is a bit annoying, though. ^-^'

#### How would you like to achieve it?
I think there should be a setting that:
* Removes the "History" panel in list of rooms.
* Automatically forgets rooms after we click "Leave Room".

### Have you considered any alternatives?

Another button could be added to the UI such as "Leave Room and Forget" under the existing "Leave Room", however I don't think this is a good solution.

### Additional context

_No response_