All languages in native notebooks, default Python

[DonJayamanne]

For #13484
Temporarily defaults to Python, later we'll support defaulting to other languages based on notebooks used by user https://github.com/microsoft/vscode-python/issues/13522

[codecov-commenter]

Codecov Report

Merging #13786 into main will increase coverage by 0.03%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##             main   #13786      +/-   ##
==========================================
+ Coverage   59.88%   59.91%   +0.03%     
==========================================
  Files         678      684       +6     
  Lines       37867    37956      +89     
  Branches     5458     5464       +6     
==========================================
+ Hits        22675    22740      +65     
- Misses      14034    14039       +5     
- Partials     1158     1177      +19     

Impacted Files	Coverage Δ
src/client/datascience/notebook/helpers/helpers.ts	39.34% <33.33%> (-0.08%)	⬇️
src/client/datascience/crossProcessLock.ts	79.41% <0.00%> (-11.77%)	⬇️
src/client/common/utils/platform.ts	56.00% <0.00%> (-8.00%)	⬇️
src/client/linters/pydocstyle.ts	86.66% <0.00%> (-2.23%)	⬇️
src/client/datascience/debugLocationTracker.ts	76.56% <0.00%> (-1.57%)	⬇️
src/client/common/process/proc.ts	14.49% <0.00%> (-0.73%)	⬇️
src/client/logging/levels.ts	61.11% <0.00%> (ø)
src/client/logging/logger.ts	62.74% <0.00%> (ø)
src/client/logging/formatters.ts	53.57% <0.00%> (ø)
src/client/logging/transports.ts	65.11% <0.00%> (ø)
... and 17 more

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

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

No Coverage information
No Duplication information