fix: Only unpause focus traps that we paused ourselves

[juliushaertl]

Fix #5326

Still need to check if there is a more elegant approach, but this seems to fix it.

Also to double check, probably for a separate issue

• Having a link after a code block will allow tabbing out of the paused focus trap

[JuliaKirschenheuter]

Seems to be fixed, thank you Julius!

Solution should not be perfect for now. Let's merge if it solve a problem ;)

[JuliaKirschenheuter]

/backport to stable28

[juliushaertl]

/backport to stable28

[backportbot]

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 backport/5327/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 c22d700a37654d5e7ad74397b9c33307ea56d991

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/5327/stable28

Error: No changes found in backport branch

---

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

[juliushaertl]

Needs #5318 first

[juliushaertl]

/backport to stable28