Hide generic named default kernels from the kernel switcher

[IanMatthewHuff]

For #11552

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR).
• Title summarizes what is changing.
• Has a news entry file (remember to thank yourself!).
• Appropriate comments and documentation strings in the code.
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated.
• Test plan is updated as appropriate.
• package-lock.json has been regenerated by running npm install (if dependencies have changed).
• The wiki is updated with any design decisions/details.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
1 Code Smell

No Coverage information
0.0% Duplication

[codecov-io]

Codecov Report

Merging #11763 into master will decrease coverage by 0.08%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master   #11763      +/-   ##
==========================================
- Coverage   60.71%   60.63%   -0.09%     
==========================================
  Files         629      628       -1     
  Lines       33999    33948      -51     
  Branches     4793     4781      -12     
==========================================
- Hits        20643    20583      -60     
- Misses      12364    12366       +2     
- Partials      992      999       +7     

Impacted Files	Coverage Δ
...lient/datascience/jupyter/kernels/kernelService.ts	52.87% <50.00%> (+0.52%)	⬆️
...nt/datascience/jupyter/kernels/kernelSelections.ts	89.21% <62.50%> (-1.32%)	⬇️
src/client/datascience/jupyter/kernels/helpers.ts	91.66% <100.00%> (+4.16%)	⬆️
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/common/utils/misc.ts	63.63% <0.00%> (-10.73%)	⬇️
src/client/common/installer/productInstaller.ts	86.16% <0.00%> (-6.67%)	⬇️
src/client/logging/transports.ts	77.77% <0.00%> (-3.48%)	⬇️
src/client/common/utils/decorators.ts	78.02% <0.00%> (-2.38%)	⬇️
src/client/linters/pydocstyle.ts	86.66% <0.00%> (-2.23%)	⬇️
... and 25 more

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