getActiveInteractiveWindow to getActiveOrAssociatedInteractiveWindow

[rebornix]

Follow up of #10153

As @DonJayamanne pointed out in #10153 (comment), IInteractiveWindowProvider already has activeWindow getter, which gives you the currently active/focused interactive window instance in VS Code. The newly introduced getActiveInteractiveWindow is ambiguous as it actually does two things:

• get active interactive window, same as activeWindow getter
• if there is no activeWindow but there is an active text editor, find its associated interactive window

Thus I think it's better to rename this function to getActiveOrAssociatedInteractiveWindow to reflect its purpose better.

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• Unit tests & system/integration tests are added/updated.
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[codecov-commenter]

Codecov Report

Merging #10160 (d124a80) into main (e2ccb63) will increase coverage by 0%.
The diff coverage is 0%.

@@          Coverage Diff          @@
##           main   #10160   +/-   ##
=====================================
  Coverage    61%      61%           
=====================================
  Files       203      203           
  Lines      9237     9240    +3     
  Branches   1491     1492    +1     
=====================================
+ Hits       5638     5640    +2     
+ Misses     3125     3124    -1     
- Partials    474      476    +2     

Impacted Files	Coverage Δ
src/platform/common/activeEditorContext.ts	93% <0%> (ø)
src/platform/errors/jupyterInvalidKernelError.ts	66% <0%> (-34%)	⬇️
src/platform/common/net/httpClient.ts	55% <0%> (-5%)	⬇️
src/platform/errors/types.ts	41% <0%> (-4%)	⬇️
src/platform/common/cancellation.ts	59% <0%> (-2%)	⬇️
src/platform/errors/errorHandler.ts	54% <0%> (+2%)	⬆️