fix check for available modules

[Borda]

What does this PR do?

Fixes #770

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[codecov]

Codecov Report

Merging #772 (dfd6ed5) into master (9bda05a) will decrease coverage by 0%.
The diff coverage is 94%.

@@          Coverage Diff          @@
##           master   #772   +/-   ##
=====================================
- Coverage      95%    95%   -0%     
=====================================
  Files         171    171           
  Lines        6913   6926   +13     
=====================================
+ Hits         6556   6563    +7     
- Misses        357    363    +6     

[akihironitta]

Confirmed this PR fixes Lightning-AI/pytorch-lightning#11524.

[ethanwharris]

Looks good, is there a way to confirm that this fixes the issue?

[Borda]

Looks good, is there a way to confirm that this fixes the issue?

I was running it locally, but not much as it is the function that would be used for pytest skipif for testing... so loop 😕