Fix CI

[T4rk1n]

I've identified two different issue in the recent CI failures:

• setuptools >=80.0.0 changed something with the path resolution of local installed package, breaking the typing tests. I also migrated the tests to run on github workflow instead.
• Migrated the background callback tests to run on github workflow instead of circleci, the tests now passes. There is a new v2 container on circleci that seems to be the culprit.

Also ignore the new html attribute from #3295

[gvwilson]

great work @T4rk1n - thanks for figuring this out.

[gvwilson]

👍 well done