Retry ipywidget tests

[DonJayamanne]

A number of the IPyWidget tests are failing on the flaky pipeline.
Ensured tests are re-tried.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
0.0% Duplication

[IanMatthewHuff]

Was it some particular tests (asking since I'm currently running them locally with real jupyter)?

[codecov-io]

Codecov Report

Merging #11189 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11189      +/-   ##
==========================================
- Coverage   61.45%   61.43%   -0.03%     
==========================================
  Files         596      596              
  Lines       32874    32874              
  Branches     4659     4659              
==========================================
- Hits        20203    20196       -7     
- Misses      11654    11659       +5     
- Partials     1017     1019       +2     

Impacted Files	Coverage Δ
src/datascience-ui/react-common/arePathsSame.ts	75.00% <0.00%> (-12.50%)	⬇️
src/client/common/utils/platform.ts	64.70% <0.00%> (-11.77%)	⬇️
src/client/linters/pydocstyle.ts	86.66% <0.00%> (-2.23%)	⬇️
src/client/datascience/debugLocationTracker.ts	76.56% <0.00%> (-1.57%)	⬇️
...client/datascience/kernel-launcher/kernelFinder.ts	75.70% <0.00%> (-0.94%)	⬇️
src/client/common/process/proc.ts	14.49% <0.00%> (-0.73%)	⬇️

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