fix(HeadlineEditor): Fix anchor position

[tvdeyen]

What is this pull request for?

The necessary css class was not present because we asked for many instead of any.

But the level select is always present, just disabled for a single option.

Checklist

• I have followed Pull Request guidelines
• I have added a detailed description into each commit message
• I have added tests to cover this change

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.06%. Comparing base (d187dd2) to head (84aebbb).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3832   +/-   ##
=======================================
  Coverage   98.06%   98.06%           
=======================================
  Files         322      322           
  Lines        8526     8526           
=======================================
  Hits         8361     8361           
  Misses        165      165           

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