Improve collision check on hparams between LightningModule and DataModule

[ananthsub]

What does this PR do?

Fixes #9492

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

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[codecov]

Codecov Report

Merging #9496 (6140181) into master (45200fc) will decrease coverage by 4%.
The diff coverage is 91%.

@@           Coverage Diff           @@
##           master   #9496    +/-   ##
=======================================
- Coverage      93%     89%    -4%     
=======================================
  Files         180     181     +1     
  Lines       15116   15178    +62     
=======================================
- Hits        14043   13486   -557     
- Misses       1073    1692   +619     

[tchaton]

LGTM !

[SeanNaren]

Thanks @ananthsub!