Media and gallery previews now hug the image (inline box, capped height)
instead of stretching across fixed grid cells, removing empty letterbox space.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Media/gallery previews no longer stretch or crop: use object-fit contain,
natural sizing for single media, and the uncropped medium size instead of
the square thumbnail for gallery and native meta-box previews.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>