Debug pytorch-lightning module not found error

[raoakarsha]

What does this PR do?

Tries to fix the PL import error in HPU CI:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/_pytest/config/__init__.py", line 1638, in parse_warning_filter
    category: Type[Warning] = _resolve_warning_category(category_)
  File "/usr/local/lib/python3.8/dist-packages/_pytest/config/__init__.py", line 1676, in _resolve_warning_category
    m = __import__(module, None, None, [klass])
ModuleNotFoundError: No module named 'pytorch_lightning'

https://dev.azure.com/Lightning-AI/lightning/_build/results?buildId=76888&view=logs&j=8a08b103-7f3c-5f4b-1889-6a795acbb007&t=5236135a-7c43-5800-935b-e902d7c2c9ea

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[akihironitta]

I haven't followed up on recent changes in installation of PL, but let me ping @Borda just in case he has an idea 👀 I've just realised that @Borda has also been working on debugging in #13419.

[raoakarsha]

@akihironitta @Borda Please do not review this PR. I am trying to debug the issue. Shall update once am done with testing