Frontend test dont run when repo cloned

[jooooosef]

Since initially the typescript is not compiled, these files are missing and the frontend test do not work.

To reproduce

• delete static folder
• git submodule update --init (no we have state after having cloned the repo)
• nix develop .#evap-frontend-dev
• ./manage.py test --tag selenium

No it does not run.
If we do ./manage.py ts compile most test run again.
If we do ./mange.py scss all tests run again.

We should prob do the same as in the github job:

- name: Compile assets
        run: |
          python manage.py ts compile
          python manage.py scss