python: Init venv/virtualenv activation scripts during list/resolve (#40816)

This means that existence of activation scripts for venv/virtualenv will
be checked locally either on the host if editing locally, or the remote
by the remote proxy if editing a remote project.

Closes https://github.com/zed-industries/zed/issues/40263

Release Notes:

- N/A
e49edfac74Jakub Konka committed on 10/21/2025, 8:57:31 PM· committed by GitHubparentfd10017
8 files changedLine totals unavailable