fix(geometric): validate RotateImage scale is positive and finite

[Jayant-kernel]

Description

Fixes RotateImage silently corrupting the output when scale is zero, negative, or non-finite.

With scale=0, cv2.getRotationMatrix2D maps every destination pixel to the image centre, producing a uniform solid-colour output with no error raised. Negative and non-finite values produce similarly unexpected results.

This adds the same class of validation already applied to ScaleImage (issue #302).

Fixes #320

Type of Change

• Bug fix

How Has This Been Tested?

• New tests added — tests/operators/geometric/test_rotate_image.py
  • default and valid params work correctly
  • scale=0, negative, inf, -inf, nan all raise ValueError
  • shape is preserved for valid inputs
• Existing tests pass

Checklist

• My code follows the project's style guidelines
• I have performed a self-review
• My changes generate no new warnings
• Tests pass locally

[github-actions]

PR Review

Squash

Your PR has 2 commits. Please squash into a single commit.

How to fix

git fetch origin
git rebase -i origin/main   # mark all but first commit as "squash"
git push --force-with-lease

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