[transforms] update random apply to work also with targets

[felixdittrich92]

This PR:

• extends RandomApply to work also with transformations which takes targets

Any feedback is welcome 🤗

[codecov]

Codecov Report

Merging #1333 (5e9e428) into main (3271460) will not change coverage.
Report is 2 commits behind head on main.
The diff coverage is 95.23%.

@@           Coverage Diff           @@
##             main    #1333   +/-   ##
=======================================
  Coverage   95.78%   95.78%           
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  Files         154      154           
  Lines        6902     6902           
=======================================
  Hits         6611     6611           
  Misses        291      291           

Flag	Coverage Δ
unittests	95.78% <95.23%> (ø)

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Files	Coverage Δ
doctr/models/classification/predictor/pytorch.py	95.45% <100.00%> (ø)
doctr/models/detection/predictor/pytorch.py	95.23% <100.00%> (ø)
doctr/models/kie_predictor/pytorch.py	100.00% <100.00%> (ø)
doctr/models/predictor/pytorch.py	100.00% <100.00%> (ø)
doctr/models/recognition/parseq/pytorch.py	97.16% <100.00%> (ø)
doctr/models/recognition/parseq/tensorflow.py	97.33% <100.00%> (ø)
doctr/models/recognition/predictor/pytorch.py	91.66% <100.00%> (ø)
doctr/models/recognition/vitstr/pytorch.py	100.00% <100.00%> (ø)
doctr/models/recognition/vitstr/tensorflow.py	97.61% <100.00%> (ø)
doctr/transforms/modules/base.py	94.59% <75.00%> (ø)