Space in extension path: Debugger test failures

[rchiodo]

1. Unit Tests - debugging
   Debugger should start (nosetest):

   Incorrect number of test files

   • expected - actual

   -0
   +2

   at testStartingDebugger (out/test/testing/debugger.test.js:95:23)
   at processTicksAndRejections (internal/process/task_queues.js:94:5)
   at Context. (out/test/testing/debugger.test.js:126:9)

2. Unit Tests - debugging
   Debugger should stop when user invokes a test discovery (nosetest):

   Incorrect number of test files

   • expected - actual

   -0
   +2

   at testStoppingDebugger (out/test/testing/debugger.test.js:132:23)
   at runMicrotasks ()
   at processTicksAndRejections (internal/process/task_queues.js:94:5)
   at Context. (out/test/testing/debugger.test.js:154:9)

3. Unit Tests - debugging
   Debugger should not stop when test discovery is invoked automatically by extension (nosetest):

   Incorrect number of test files

   • expected - actual

   -0
   +2

   at testDebuggerWhenRediscoveringTests (out/test/testing/debugger.test.js:160:23)
   at runMicrotasks ()
   at processTicksAndRejections (internal/process/task_queues.js:94:5)
   at Context. (out/test/testing/debugger.test.js:190:9)

Steps to repro:

1. Clone into a path with a space
2. Run debugger tests

Or if that doesn't work, use a github action as done in this pr:
#14113

[kimadeline]

Didn't make any changes, couldn't repro on main 43a8716: https://github.com/kimadeline/vscode-python/actions/runs/290164499