Fixes to detection of shell

[DonJayamanne]

For #6928

[codecov-io]

Codecov Report

Merging #7384 into master will increase coverage by 0.62%.
The diff coverage is 100%.

@@ Coverage Diff @@ ## master #7384 +/- ## ========================================== + Coverage 57.81% 58.44% +0.62%  ========================================== Files 493 493 Lines 21396 21782 +386 Branches 3481 3494 +13 ========================================== + Hits 12371 12731 +360  - Misses 8245 8269 +24  - Partials 780 782 +2

Impacted Files	Coverage Δ
src/client/common/terminal/shellDetector.ts	100% <100%> (ø)	⬆️
src/client/datascience/debugLocationTracker.ts	69.56% <0%> (-12.44%)	⬇️
src/client/common/logger.ts	68.55% <0%> (-6.92%)	⬇️
...debugger/extension/configuration/resolvers/base.ts	91.3% <0%> (-5.47%)	⬇️
src/client/datascience/jupyter/jupyterNotebook.ts	6.01% <0%> (-0.04%)	⬇️
...t/datascience/jupyter/jupyterDataRateLimitError.ts	100% <0%> (ø)	⬆️
src/client/formatters/serviceRegistry.ts	100% <0%> (ø)	⬆️
...lient/datascience/jupyter/jupyterSelfCertsError.ts	100% <0%> (ø)	⬆️
src/client/debugger/extension/serviceRegistry.ts	100% <0%> (ø)	⬆️
src/client/common/variables/serviceRegistry.ts	100% <0%> (ø)	⬆️
... and 32 more

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[DonJayamanne]

Flaky CI

[DonJayamanne]

This is crazy, flaky CI