Extension doesn't list conda environment until window refresh

[SiddhanthUnnithan]

Testing Codespace Scenario: 1791

Steps:

1. Create conda environment using dependencies file (YAML).
2. Test conda environment by activating in terminal.
3. Click interpreter list in status bar.
4. Check for freshly installed env via name.

Expected:
Interpreter list would include freshly installed conda env without requiring a window refresh.

[kimadeline]

@SiddhanthUnnithan which version of the extension were you using? Were you opted into any experiment (python.experiments.optInto)?

[kimadeline]

Could reproduce with the following versions of the extension:

• 2020.11.371526539
• 2020.12.424027540 (not opted into the pythondiscoverymodule experiment)

When creating a new conda environment with dependencies (conda env create -f environment.yml) in the codespace terminal, the environment doesn't appear in the list of interpreters until the window is refreshed.

[luabud]

Related to #2640

[karthiknadig]

Looks like this is addressed with the new discovery module. We detect the new environment after creation and list it, without refreshing the window: