Fix arrowing down through cells

[rchiodo]

For #11094

[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]

@rchiodo Maybe add a test as we've regressed this once now?

[codecov-io]

Codecov Report

Merging #11095 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11095      +/-   ##
==========================================
- Coverage   61.42%   61.39%   -0.04%     
==========================================
  Files         597      597              
  Lines       32756    32761       +5     
  Branches     4631     4633       +2     
==========================================
- Hits        20121    20114       -7     
- Misses      11619    11629      +10     
- Partials     1016     1018       +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%)	⬇️
...ence/ipywidgets/localWidgetScriptSourceProvider.ts	88.13% <0.00%> (-3.39%)	⬇️
...t/common/application/webPanels/webPanelProvider.ts	32.14% <0.00%> (-2.48%)	⬇️
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%)	⬇️
src/client/common/application/types.ts	100.00% <0.00%> (ø)
src/client/datascience/activation.ts	94.44% <0.00%> (+0.15%)	⬆️
... and 1 more

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