Nested tag toasts from drag-and-drop only showed the leaf name for
non-root tags, contradicting the comment above it and making two
same-named leaves under different parents (e.g. Personal/Receipts vs
Work/Receipts) indistinguishable in the toast.
The context menu's markAsRead handler was the one action left reading
the stale contextMenu.data instead of the live-refreshed
contextMenuEmail introduced alongside it, so it could act on outdated
email state while every sibling handler was already updated.
Linus Rath
1cdbf75270