[stable30] fix(settings): Hide forbidden UI elements for group managers

[susnux]

• Manual backport of fix(settings): Hide forbidden UI elements for group managers #47589

Summary

1. The "recent" accounts API only works for admin and delegated admin -> hide for group managers
2. Group managers can not create new groups -> Hide the UI to add a new group for them
3. Accounts created by group managers require one of the groups, which is managed by the group manager, assigned. So if the group manager only manages a single group, we should pre-select that group.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[susnux]

/backport to stable29

[AndyScherzinger]

/compile /

[backportbot]

The backport to stable29 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable29
git pull origin stable29

# Create the new backport branch
git checkout -b backport/47651/stable29

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 8c17f1ea c77580f7

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/47651/stable29

Error: Failed to clone repository: Failed to checkout branches: Updating 1cc7851..7f0d0cf
From https://github.com/nextcloud/server

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  error: Your local changes to the following files would be overwritten by merge:
  dist/4254-4254.js.map.license
  dist/4696-4696.js.map.license
  dist/5643-5643.js.map.license
  Please commit your changes or stash them before you merge.
  Aborting

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.