Fix test-val dsize.empty in video anomalib

[Bepitic]

Signed-off-by: Bepitic bepitic@gmail.com

📝 Description

The error of size being empty in the function of resize, can be because of:

• 1th, it is empty, (not our case)

• 2th the third dimension(channels) in the image is more than 512(our case).
  In our case we are providing the image in the shape of [C, X, Y] and cv2 resize expects, [ X, Y, C].
  This PR only arranges de dimensionality to match the shape

• 🛠️ Fixes [Bug]: validation and testing in anomalib video  #1969

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[Bepitic]

We could identify this if the image of the dataset in the test is 512 or more instead of 256.