Ensure multiselect Tabulator header filter uses 'in' filter function

[philippjfr]

Fixes #7110

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.22%. Comparing base (f63a9dd) to head (89888ed).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7111   +/-   ##
=======================================
  Coverage   82.21%   82.22%           
=======================================
  Files         327      327           
  Lines       48903    48905    +2     
=======================================
+ Hits        40205    40211    +6     
+ Misses       8698     8694    -4     

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