Final prep for G3 device context support

[uartie]

What does this PR do?

This is the final refactor to prep for G3 as a first-class device context. It will enable the capability to capture separate G3-specific baselines.

1. Converts the rest of the tests to use the baseline fixture.
2. Updates the logic to make Gaudi1 the exception, not Gaudi2.
3. Delay/refactor some asserts and other setup that occurred when module was loaded.
4. Clones the "gaudi2" baselines to "gaudi3" baselines as a starting point.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

[uartie]

Same result before and after PR:

python -m pytest tests/test_examples.py -v -s -k "single_card"
============================= test session starts ==============================
platform linux -- Python 3.10.12, pytest-7.4.4, pluggy-1.5.0 -- /usr/bin/python
cachedir: .pytest_cache
device context: gaudi2
configfile: setup.cfg
collecting ... collected 54 items / 45 deselected / 9 selected
<snip>
=========== 4 failed, 5 passed, 45 deselected in 2226.34s (0:37:06) ============

[regisss]

@uartie I think those are the same changes as in #1824 right?

[uartie]

@uartie I think those are the same changes as in #1824 right?

Yes. @hsubramony used #1824 to pull these into the transformers branch.

[uartie]

@uartie I think those are the same changes as in #1824 right?

Yes. @hsubramony used #1824 to pull these into the transformers branch.

#1824 did include some additional changes on top of these...