[Feat] Add DataLoader state dict to Loop state dict - 5/n

[tchaton]

What does this PR do?

This PR adds the dataloader states to loop state_dict only if fault_tolerant is enabled.

To be merged after #8334 (1/2), #8362 (2/2), #8364 (1/2) #8366 (2/2).

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

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[codecov]

Codecov Report

Merging #8370 (299e289) into data_loading_extensions (087df3d) will increase coverage by 48%.
The diff coverage is 95%.

❗ Current head 299e289 differs from pull request most recent head 8695df0. Consider uploading reports for the commit 8695df0 to get more accurate results

@@                    Coverage Diff                    @@
##           data_loading_extensions   #8370     +/-   ##
=========================================================
+ Coverage                       45%     93%    +48%     
=========================================================
  Files                          217     169     -48     
  Lines                        14237   14073    -164     
=========================================================
+ Hits                          6373   13042   +6669     
+ Misses                        7864    1031   -6833