fix(hotkeys): safari and firefox focusout event on press enter

Michael Holstrequested to merge
m.holst/k3k-web-frontend:hotfix/hotkeys_not_working_after_join_with_enter_on_firefox into main

There is a bug, which leads to disabled hotkeys when a user drops into the conference by pressing Enter when an input field is focused. Reason is that firefox and safari does not send a focusout by this userflow.

Merge request reports