<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=22004) </details> <!--IssueSummary end--> EE currently has an additional `skip_notification` accessor in https://gitlab.com/gitlab-org/gitlab-ee/blob/dc62ac84d0e0b7705e3cdb0346c305eeb11233ec/app/models/member.rb#L10 and subclasses use it in various notification methods such as https://gitlab.com/gitlab-org/gitlab-ee/blob/dc62ac84d0e0b7705e3cdb0346c305eeb11233ec/app/models/members/project_member.rb#L104. I think `skip_notification` is generic enough that we could just port it to CE and reduce the differences between CE and EE.