Ensure Tabulator empty column has no width

[philippjfr]

Fixes regression introduced in #7299, causing empty column to show up.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.03%. Comparing base (21aa521) to head (e424974).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8193   +/-   ##
=======================================
  Coverage   86.02%   86.03%           
=======================================
  Files         348      348           
  Lines       53983    53983           
=======================================
+ Hits        46440    46442    +2     
+ Misses       7543     7541    -2     

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.