Tabulator errors with selectable_rows and nonallowed selection

[hoxbro]

Fixes #3644

I could only stop values that were not allowed by selectable_rows by using a subclass of param.List.

If I used something like _process_param_change raised the error but the parameter Tabulator.selection will have the wrong value.

[codecov[bot]]

Codecov Report

Merging #3721 (4227b07) into master (3047ca3) will increase coverage by 0.03%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3721      +/-   ##
==========================================
+ Coverage   83.55%   83.58%   +0.03%     
==========================================
  Files         207      207              
  Lines       29678    29711      +33     
==========================================
+ Hits        24798    24835      +37     
+ Misses       4880     4876       -4     

Flag	Coverage Δ
ui-tests	31.89% <31.57%> (+0.32%)	:arrow_up:
unitexamples-tests	78.24% <100.00%> (+0.03%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
panel/tests/widgets/test_tables.py	99.65% <100.00%> (+<0.01%)	:arrow_up:
panel/widgets/tables.py	89.28% <100.00%> (+0.16%)	:arrow_up:
panel/io/state.py	68.25% <0.00%> (ø)
panel/util.py	86.36% <0.00%> (+0.75%)	:arrow_up:
panel/io/reload.py	71.73% <0.00%> (+2.17%)	:arrow_up:

Help us with your feedback. Take ten seconds to tell us how you rate us.

[Coderambling]

Is this one fixed or still an issue?