Ensure follow behavior works when streaming to paginated Tabulator

[philippjfr]

Fixes #6800

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 81.76%. Comparing base (663a159) to head (4865d2c).
Report is 1 commits behind head on main.

Files	Patch %	Lines
panel/tests/ui/widgets/test_tabulator.py	60.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7084      +/-   ##
==========================================
- Coverage   82.23%   81.76%   -0.47%     
==========================================
  Files         326      326              
  Lines       48536    48548      +12     
==========================================
- Hits        39914    39696     -218     
- Misses       8622     8852     +230     

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