Fix Connection Errors caused by subtle change to test_embeddings.py

[gvanrossum]

In test_embeddings.py, test_refresh_auth() does something to its embedding_model fixture that somehow hangs around past the end of the test, causing Connection Errors in later test files (not in its own file).

I've tried various ways to fix this; the cleanest way appears to be to put back the explicit import of the embedding_model fixture.

This fixes the problem when running tests locally, but in CI it still fails. I'm at my wits' end and plan to merge this despite the CI failures -- it's possible that the CI failures disappear once it's in main, and even if not, at least this fixes local test runs.

Tries to deal with #133.

[gvanrossum]

Dang. In CI the tests fail in exactly the same way as before. Sigh.

[gvanrossum]

That didn't help either.

[gvanrossum]

That didn't help either.

Oh, of course it didn't! The dist/ contains only things built from typegent/, and the only changes are in test/. So rolling back that ci.yml change.

I think I'm going to merge what's left -- it fixes the local tests at least, and who knows it may fix CI too once it's incorporated into main.