Enabling direnv disables Python intellisense

[fedorenchik]

After loading direnv environment, python autocomplete stops working. It seems it affects vs code python intellisense environment in some way that it prevents it find imported python modules or some settings.

Steps to reproduce:

1. create python venv with pipenv with some project
2. check that intellisense works
3. add .envrc with layout pipenv
4. let extension to load .envrc (automatically or with manual reload)
5. python intellisense stops working

Expected behaviour:

• python intellisence continues to work