[VTK] Various fix

[xavArtley]

Supersedes: #1402
fix: #1401
fix: #1398

[codecov]

Codecov Report

Merging #1406 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1406      +/-   ##
==========================================
+ Coverage   87.84%   87.86%   +0.01%     
==========================================
  Files         132      132              
  Lines       14665    14689      +24     
==========================================
+ Hits        12883    12907      +24     
  Misses       1782     1782              

Impacted Files	Coverage Δ
panel/pane/vtk/synchronizable_serializer.py	84.46% <ø> (ø)
panel/pane/vtk/vtk.py	94.18% <100.00%> (+0.28%)	⬆️
panel/tests/pane/test_vtk.py	98.16% <100.00%> (+0.02%)	⬆️

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[philippjfr]

Is this ready? I noticed you were asking some of the VTK folks for some help.

[xavArtley]

yes it's ready I found the solution

[philippjfr]

Fabulous, you rock!