fix: Fixed Resize transfo in PyTorch when aspect ratio matches the target

[fg-mindee]

In rare cases, when the original image has the same aspect ratio as the target size, the resize was not performed correctly. This PR fixes that and adds a test case in corresponding pytorch unittests.

Any feedback is welcome!

[codecov]

Codecov Report

Merging #357 (6cb0734) into main (9098e16) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #357      +/-   ##
==========================================
- Coverage   96.09%   96.06%   -0.03%     
==========================================
  Files          83       83              
  Lines        3404     3404              
==========================================
- Hits         3271     3270       -1     
- Misses        133      134       +1     

Flag	Coverage Δ
unittests	96.06% <100.00%> (-0.03%)	⬇️

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Impacted Files	Coverage Δ
doctr/transforms/modules/pytorch.py	100.00% <100.00%> (ø)
...dels/detection/differentiable_binarization/base.py	91.08% <0.00%> (-0.64%)	⬇️

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[charlesmindee]

Thanks