Button - support isFavorite and isFavorited on Button for animation styling

[jenny-s51]

Noted by @andrew-ronaldson. The existing implementation of Button in RHOAI does not apply the new variant that supports animations. cc @gitdallas @thatblindgeye

See https://www.patternfly.org/components/button/#favorite

Since this variant is newly supported in PF, RHOAI was a using custom implementation of a Button that uses an icon prop to directly apply favorite icon + styling to the className.

We need a codemod that can check for StarIcon and replace it with the new props for the favorite variant. We can also surface a warning for more complex cases.