Set gon.ee in EE-specific Karma and Jest tests

The following discussion from !9794 (merged) should be addressed:

• @winh started a discussion: (+3 comments)

  does this line imply that we are always running tests with the CE code base even for EE-specific tests? or am I missing something? 🤔

From @leipert:

Should we just run the tests twice once with ee=false and once with ee=true?

Ah, what about fixture generation?