change stop icon and debugging setting

[DavidKutu]

For #6866, #6860

• 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).

[codecov-commenter]

Codecov Report

Merging #6953 (11eeb3b) into main (7314781) will increase coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff           @@
##            main   #6953    +/-   ##
======================================
  Coverage     64%     65%            
======================================
  Files        410     410            
  Lines      28532   28532            
  Branches    4264    4264            
======================================
+ Hits       18462   18601   +139     
+ Misses      8457    8298   -159     
- Partials    1613    1633    +20     

Impacted Files	Coverage Δ
...datascience/interactive-common/notebookProvider.ts	81% <0%> (-6%)	⬇️
.../datascience/jupyter/kernels/cellExecutionQueue.ts	89% <0%> (-5%)	⬇️
...ient/datascience/raw-kernel/rawNotebookProvider.ts	86% <0%> (-4%)	⬇️
src/client/datascience/jupyter/kernels/kernel.ts	63% <0%> (-3%)	⬇️
...ience/kernel-launcher/localKernelSpecFinderBase.ts	79% <0%> (-3%)	⬇️
src/client/datascience/telemetry/telemetry.ts	72% <0%> (-2%)	⬇️
...rc/client/datascience/jupyter/debuggerVariables.ts	73% <0%> (-2%)	⬇️
src/client/datascience/baseJupyterSession.ts	65% <0%> (-1%)	⬇️
src/client/datascience/jupyter/jupyterNotebook.ts	65% <0%> (-1%)	⬇️
...lient/datascience/jupyter/kernels/cellExecution.ts	70% <0%> (+<1%)	⬆️
... and 15 more