More Venv Fixes + Dependency Fail Detect on Python

[andreamah]

Description:

Sorry for all of the Venv PR's, everyone 😥😥 !!

Venv fixes:

• If you had a pre-existing extension-created venv but switched to another global interpreter, it wouldn't auto-point back to the extension-created venv.
• Global interpreter wasn't properly switching when you configure a new environment within the same instance that you configured another one (ie: configured for global interpreter 1, but then switch to global interpreter 2 via command prompt or configuration switch detection -> global interpreter 1 would still be the one being used to run Python).

Python Improvements:
If you refuse to install any dependencies, running the code will now give a more helpful message (a suggestion from David in PR #228 !!).

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Limitations:

Testing:

Checklist:

• My code follows the style guidelines of this project
• My code has been formatted with npm run format and passes the checks in npm run check
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[xnkevinnguyen]

LGTM

[vandyliu]

LGTM

[isadorasophia]

LGTM! 🍰