More UI fixes (#22431)

* Fix chat filter button

Oh look, the popup code was copy pasted between chat filter and channel selector.

Hilarious.

Anyways same stuff as 995f506aaf. I pulled it all out into a base class so NO MORE COPY PASTE.

Fixes #22360

* Remove all further EnableAllKeybinds buttons.

Fixes #22346

Yeah none of these are valid use cases, why is this set...

Content.Client/Administration/UI/CustomControls/PlayerListControl.xaml.cs

@@ -122,7 +122,7 @@ namespace Content.Client.Administration.UI.CustomControls
                     }
                 }
             });
-            button.EnableAllKeybinds = true;
+
             button.AddStyleClass(ListContainer.StyleClassListContainerButton);
         }
     }