Use PythonExecutionService when possible

[karthiknadig]

For #7697

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Unit tests & system/integration tests are added/updated

[codecov-io]

Codecov Report

Merging #8338 into master will decrease coverage by <.01%.
The diff coverage is 62.5%.

@@            Coverage Diff             @@
##           master    #8338      +/-   ##
==========================================
- Coverage   59.24%   59.24%   -0.01%     
==========================================
  Files         508      508              
  Lines       23227    23288      +61     
  Branches     3746     3777      +31     
==========================================
+ Hits        13761    13797      +36     
- Misses       8573     8595      +22     
- Partials      893      896       +3

Impacted Files	Coverage Δ
src/client/testing/navigation/symbolProvider.ts	93.1% <100%> (-0.65%)	⬇️
src/client/terminals/codeExecution/helper.ts	21.27% <25%> (-0.73%)	⬇️
src/client/datascience/jupyter/jupyterDebugger.ts	8.43% <0%> (-2.04%)	⬇️
...ractive-window/interactiveWindowCommandListener.ts	59.61% <0%> (-0.69%)	⬇️
src/client/common/errors/errorUtils.ts	50% <0%> (ø)	⬆️
src/client/common/process/types.ts	100% <0%> (+12.5%)	⬆️
src/client/common/utils/async.ts	85.71% <0%> (+14.28%)	⬆️
src/client/common/process/pythonProcess.ts	95.55% <0%> (+64.44%)	⬆️

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[kimadeline]

A few minor comments, other than that ✅

[karthiknadig]

Re-triggering via close and re-open. since re-runs (via Checks) no longer work.