[Feature] Cleanup - pollForProcessingImage, preserveTransformations

[colbyfayock]

Feature Request

Is your feature request related to a problem? Please describe.

Update package to use newly abstracted pollForProcessingImage and preserveTransformations

import { pollForProcessingImage } from '@cloudinary-util/util';

and preserveTransformations no longer needs to be maintained within the framework

cloudinary-community/cloudinary-util#184
cloudinary-community/cloudinary-util#187

Updates done in Next Cloudinary:
cloudinary-community/next-cloudinary#504

[colbyfayock]

oops, dupe of #229