Revert "Notebook undo command is same as standard undo cmd (#13293)"

[DonJayamanne]

This reverts commit d7c9348.

For #13316

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

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

No Coverage information
0.1% Duplication

[codecov-commenter]

Codecov Report

Merging #13318 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #13318      +/-   ##
==========================================
- Coverage   59.73%   59.71%   -0.03%     
==========================================
  Files         670      670              
  Lines       37289    37289              
  Branches     5292     5292              
==========================================
- Hits        22276    22267       -9     
- Misses      13879    13885       +6     
- Partials     1134     1137       +3     

Impacted Files	Coverage Δ
src/client/common/utils/platform.ts	64.70% <0.00%> (-11.77%)	⬇️
src/client/datascience/crossProcessLock.ts	79.41% <0.00%> (-11.77%)	⬇️
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%)	⬇️

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