The /assets page (and the picker dialog that reuses GalleryBrowser)
posted files in a single multipart request, so anything past nginx /
php-fpm's body limit failed with 413. The chunked endpoint and util
already existed but were only wired into an orphan composable.
- GalleryBrowser now always uploads via uploadChunked
- Drop the orphan useMediaManager composable
- Drop shouldUseChunkedUpload (no longer referenced)
