Fix integration tests

[danielhollas]

One of the integration test is currently failing since the new alpha release of AWB because when we uninstall the app do do not uninstall the corresponding python package from the Python environment, leading to a pip check failing in the next test. This is filed as a bug in aiidalab aiidalab/aiidalab#405

FAILED tests/test_aiidalab_apps.py::test_install_apps_from_default_branch[aiidalab-widgets-base]
Command docker compose -f "stack/docker-compose.full-stack.yml" -p "pytest1774" exec -T --user=jovyan 
aiidalab pip check returned 1:
aiidalab-qe 24.10.0a1 has requirement aiidalab-widgets-base[optimade]<2.4.0,~=2.2.0, 
but you have aiidalab-widgets-base 2.3.0a1.

Until that is solved, I modified the fixture to uninstall the pip package corresponding to the App.
(Annoyingly, I needed to special-case aiidalab-qe since the name of the python package aiidalab-qe is different from the name of the app in the registry (quantum-espresso).

[unkcpz]

Okay, I agree this is a decent workaround. Thanks! @danielhollas
For the package name, it is more a historical reason. I am not sure how many place we need to change and if it going to break something, but we once have an agreement with @yakutovicha and @csadorf we unified to use the name aiidalab-qe in registry (correct me if my memory is wrong).