Fixed dynamic module import when there is more than one dot in class …

[ExtReMLapin]

…name

EXAMPLE : pylate.models.Dens

What does this PR do?

Fixes an error happening when there was more than one dot in class name ex pylate.models.Dens

[Rocketknight1]

This makes sense, yes, so thank you for the PR!

Can you:

1. Run make fixup or make style to fix the code quality CI
2. Rebase (should fix the other failing CI issues)
3. Add a short test in test_modeling_auto.py to make sure we don't regress on this!

After that we should be ready to merge

[ExtReMLapin]

I think the last test failing is not related.
It should be good to go, thanks for pointing me to the right direction for tests and style @Rocketknight1