Ensure Tabulator selection consistency when pagination='local'

[philippjfr]

When pagination was set to 'local', selections were not being computed correctly when header_filters were being applied. Specifically the problem was that the header_filters were still being applied on the server, which would cause the selection going out of sync with the data that was visible to the frontend. We fix this by not applying header_filters on the server in this scenario, and only when the user accesses the current_view do we apply the additional filters so that the view the user sees still matches what is visible on the frontend.

[codecov]

Codecov Report

Attention: Patch coverage is 96.34146% with 3 lines in your changes missing coverage. Please review.

Project coverage is 82.20%. Comparing base (8c6f2d5) to head (526eed0).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
panel/tests/conftest.py	50.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7304      +/-   ##
==========================================
+ Coverage   82.18%   82.20%   +0.01%     
==========================================
  Files         337      337              
  Lines       50393    50439      +46     
==========================================
+ Hits        41418    41463      +45     
- Misses       8975     8976       +1     

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