chore(ci): update workflows, remove *-when-unrelated

[max-nextcloud]

📝 Summary

Fixes #2372.

We now have a different way of handling option workflow runs. This allows to only run the workflows when needed
and require them to pass when they run.

🏁 Checklist

• code is not affected.
• Sign-off message is added to all commits
• tested by seeing if CI still runs fine
• no documentation required

[max-nextcloud]

/backport to stable28

[backportbot-nextcloud]

The backport to stable28 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable28
git pull origin stable28

# Create the new backport branch
git checkout -b fix/foo-stable28

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable28

Error: Unknown error

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport