Make sure we first check if the user can start a call
Make sure we first check if the user can start a call

Because quite some listeners check in the before event to compare to the empty call state before

Signed-off-by: Joas Schilling <ab43a7c9cb5b2380afc4ddf8b3e2583169b39a02@schilljs.com>

nextcloud/spreed,nextcloud/spreed,nextcloud/spreed