Clear text from filter box after a selection has been made.

[Soundtoxin]

Is your suggestion related to a problem? Please describe.
When using the amazing room filter feature via the ctrl-k shortcut, I noticed that even once I've made my selection by pressing enter, the text stays in the filter box. This does NOT impact fast room-switching, hitting ctrl-k again and typing part of another room name overwrites it, I can hit enter, I can still switch all from the keyboard.
The problem is then when "dog" from searching for my "dog ___" room stays in the filter box and hides all my other non-dog rooms. I then can't glance over and see my rooms, even though I've already done my room switch.

Describe the solution you'd like
I would like the filter box to be cleared after a selection has been made. This seems to be how Nheko does it.

Describe alternatives you've considered
A config option to set the current or new behavior could work okay, although I'm curious if anyone would prefer the current functionality even.

[t3chguy]

I am 1000% sure this is a duplicate but am failing to find it :'(

[t3chguy]

Duplicate of #7625