Fix GH-19730: undefined behavior in gd_interpolation.c.#22149
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Port libgd f6202ec0de1c8340cf9b69c4a86c84fc63703207: validate the computed bounding box in gdTransformAffineBoundingBox before casting the floating-point coordinates to int, and propagate the failure through gdTransformAffineGetImage.
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Port libgd f6202ec0de1c8340cf9b69c4a86c84fc63703207: validate the computed bounding box in gdTransformAffineBoundingBox before casting the floating-point coordinates to int, and propagate the failure through gdTransformAffineGetImage.