Add TensorBoard session creation test

[joyceerhl]

• 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).
• The wiki is updated with any design decisions/details.

[codecov-io]

Codecov Report

Merging #15091 (0b14c13) into main (f444948) will decrease coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff           @@
##            main   #15091   +/-   ##
======================================
- Coverage     65%      65%   -1%     
======================================
  Files        558      557    -1     
  Lines      26231    26220   -11     
  Branches    3728     3729    +1     
======================================
- Hits       17155    17061   -94     
- Misses      8381     8463   +82     
- Partials     695      696    +1     

Impacted Files	Coverage Δ
...nments/discovery/locators/services/pyenvLocator.ts	63% <0%> (-31%)	⬇️
src/client/common/utils/text.ts	50% <0%> (-19%)	⬇️
...rc/client/pythonEnvironments/common/commonUtils.ts	77% <0%> (-12%)	⬇️
.../pythonEnvironments/common/externalDependencies.ts	64% <0%> (-10%)	⬇️
src/client/interpreter/activation/service.ts	76% <0%> (-3%)	⬇️
src/client/common/utils/exec.ts	20% <0%> (-2%)	⬇️
src/client/pythonEnvironments/base/envsCache.ts	68% <0%> (-2%)	⬇️
...s/discovery/locators/services/KnownPathsService.ts	50% <0%> (ø)
...ocators/services/globalVirtualEnvronmentLocator.ts
src/client/common/utils/platform.ts	60% <0%> (+6%)	⬆️