breakage with flask-login==0.6.2

[guruofgentoo]

Not sure what changed here, but it seems like flask-login is retaining a reference to old session users even after they have been deleted. Generally, we expect that when we create a test app to log in (whether via AuthTestApp or using a plain one to test login view operation), we should have a fresh session to test with.

flask-login 0.6.2 was released to be compatible with flask/werkzeug 2.2. We need to do some work to have those compatible in keg anyway, so we can add this to the list.

[guruofgentoo]

FWIW this is the same root issue as level12/keg#90. Flask-login started to cache the user on flask.g.