Profile LightningDataModule hooks

[rohitgr7]

What does this PR do?

Fixes #12967

Does your PR introduce any breaking changes? If yes, please list them.

None

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Did you have fun?

Make sure you had fun coding 🙃

cc @Borda @carmocca @kaushikb11 @ninginthecloud @rohitgr7 @awaelchli @ananthsub @jjenniferdai

[rohitgr7]

not sure what should the best minimal test to validate the change. Any recommendations?

Thank you :)

[carmocca]

not sure what should the best minimal test to validate the change. Any recommendations?

I added a test like that in #12124 if you want to copy the pattern

[akihironitta]

🚀