Resolve "Realtime event when PermissionsObject changes"

Merge Request Checklist

• changelog.md has been updated if required
• New/updated Premium features are separated correctly in the premium folder
• The latest Chrome and Firefox have been used to test any new frontend features
• Documentation has been updated
• Quality Standards are met
• Performance: tables are still fast with 100k+ rows, 100+ field tables
• The redoc API pages have been updated for any REST API changes
• Our custom API docs are updated for changes to endpoints accessed via api tokens
• The UI/UX has been updated following UI Style Guide

Reasoning

When is the PermissionsObject updated?

• User/Team Role assignment created
• User/Team Role assignment updated
• User/Team Role assignment deleted
• User.permissions updated
• Team trashed
• Team restored

Who is affected?

Any user related to the Subject

How do we know if their permissions actually changed?

We don't, we will need to word the notification in a way that indicates that their permissions might have changed.

How to test

1. Create 2 users
2. Invite both users to the same group
3. Log into both users in 2 different browsers for example
4. Lower the role of one of the users on any scope
5. Check that the user got a notification to refresh their page

You can repeat the above fro all the different scenarios listed in When is the PermissionsObject updated?.

TODO

• Make sure the message is only sent when enterprise is enabled
• Take group into consideration when deciding to show the notification
• Make sure that permission objects are reloaded when switching groups
• Add tests

Closes #1312 (closed)