Dismiss bottom sheet on subscribe/unsubscribe to issue: Does not really fix the issue as there is way to handle this without a proper call. And dismiss does not work properly either. But added few improvements and fixed close/reopen issue along the way. Reviewed-on: https://gitea.com/gitnex/GitNex/pulls/429 Reviewed-by: 6543 <6543@noreply.gitea.io>