[ONNX] fix dynamic resize (#2488)

[fmassa]

• Update transform.py

• Update transform.py

[seemethere]

LGTM on green

[codecov]

Codecov Report

Merging #2492 into release/0.7 will decrease coverage by 0.01%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           release/0.7    #2492      +/-   ##
===============================================
- Coverage        68.58%   68.57%   -0.02%     
===============================================
  Files               93       93              
  Lines             7608     7608              
  Branches          1159     1159              
===============================================
- Hits              5218     5217       -1     
  Misses            2064     2064              
- Partials           326      327       +1     

Impacted Files	Coverage Δ
torchvision/models/detection/transform.py	95.53% <ø> (ø)
torchvision/datasets/folder.py	83.95% <0.00%> (-1.24%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e2d415c...f1fbde3. Read the comment docs.