Merge branch '384886-gitlab-for-slack-app-sections-hide-when-not-editable' into 'master'

Hide sections for Slack app when not editable

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/108844



Merged-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Approved-by: Bojan Marjanovic <bmarjanovic@gitlab.com>
Approved-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Reviewed-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Reviewed-by: Bojan Marjanovic <bmarjanovic@gitlab.com>
Co-authored-by: Justin Ho Tuan Duong <hduong@gitlab.com>