Ensure updates to Tabulator formatter or editor updates model

[philippjfr]

When providing CellEditor and CellFormatter objects to Tabulator updating the properties on these objects would not have any effect.

[codecov]

Codecov Report

Merging #4296 (f8e6d19) into main (9388d39) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #4296      +/-   ##
==========================================
+ Coverage   82.70%   82.74%   +0.03%     
==========================================
  Files         239      239              
  Lines       34464    34510      +46     
==========================================
+ Hits        28505    28555      +50     
+ Misses       5959     5955       -4     

Flag	Coverage Δ
ui-tests	38.10% <53.19%> (+0.02%)	⬆️
unitexamples-tests	73.83% <100.00%> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
panel/tests/widgets/test_tables.py	99.67% <100.00%> (+<0.01%)	⬆️
panel/widgets/tables.py	88.78% <100.00%> (+0.50%)	⬆️
panel/util/__init__.py	86.66% <0.00%> (-0.45%)	⬇️
panel/tests/util.py	91.26% <0.00%> (+1.94%)	⬆️

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