… aria-disabled

The original plan: use the Quick Bookmark icons here for enabled/disabled sates. Problem: colors would be off if we used the same background color for the ft-list-item. Button would barely appear visible. Thereore, we should probably use the existing 'secondary' theme. Problem: the 'checked' icon then looks unrecognizable and instead generic. Solution: use 'unfilled'/regular icon version for disabled state and 'filled'/solid icon version for enabled state, specifically on the ft-playlist-info page.

… and playlist deletion

Co-authored-by: efb4f5ff-1298-471a-8973-3d47447115dc <73130443+efb4f5ff-1298-471a-8973-3d47447115dc@users.noreply.github.com>

Co-authored-by: absidue <48293849+absidue@users.noreply.github.com>

…n ft-list-playlist item

Also removes now unneeded on-removal logic.

…at/always-have-quick-bookmark

…avior

The prior implementation was also leading into module loading errors.

…ness