DiscoverBrowseView and LabelReleasesView each carried their own album
grid column math, flat-list (AlbumListHeader + AlbumListRow loop), and
LabelReleasesView additionally the group-by-section rendering. Extract
all of it into a shared AlbumCollectionView (with an inner AlbumGrid),
driven by albums / grouped / is-grouped / view-mode / show-source props.
Both views now mount the one renderer; behavior is preserved (the empty
length>0 guards mirror the previous per-block guards). Readies the same
renderer for the Favorites albums tab.
cc
vicrodh
610c6c1f79