Kernel MRU for web and desktop

[DonJayamanne]

Fixes #11972

[codecov-commenter]

Codecov Report

Merging #11969 (e1f4619) into main (0986b8f) will increase coverage by 1%.
The diff coverage is 86%.

@@           Coverage Diff           @@
##            main   #11969    +/-   ##
=======================================
+ Coverage     61%      62%    +1%     
=======================================
  Files        496      498     +2     
  Lines      35205    35297    +92     
  Branches    5678     5689    +11     
=======================================
+ Hits       21607    22200   +593     
+ Misses     11581    11010   -571     
- Partials    2017     2087    +70     

Impacted Files	Coverage Δ
src/notebooks/controllers/connectionMru.web.ts	85% <84%> (ø)
src/notebooks/controllers/connectionMru.node.ts	88% <90%> (+59%)	⬆️
src/notebooks/controllers/connectionMru.ts	100% <100%> (ø)
src/notebooks/controllers/serviceRegistry.node.ts	93% <100%> (ø)
src/kernels/installer/productInstaller.node.ts	74% <0%> (-5%)	⬇️
src/kernels/raw/session/rawJupyterSession.node.ts	78% <0%> (-3%)	⬇️
src/notebooks/debugger/kernelDebugAdapterBase.ts	76% <0%> (-3%)	⬇️
...els/jupyter/finder/remoteKernelFinderController.ts	61% <0%> (-1%)	⬇️
src/platform/msrCrypto/msrCrypto.js	19% <0%> (-1%)	⬇️
... and 48 more