HocuspocusProvider 3.4.4 sends every change of its awareness to the room, also the ones the room
just sent it: everyone's pointer came back from every window, and collab-service dropped it on
the same clock (TYP-1600). Its handler ignores where a change came from; this one skips what the
provider applied from the room, so a window sends only its own state. The provider removes its
handler on destroy() by this same property.
HocuspocusProvider 3.4.4 sends every change of its awareness to the room, also the ones the room just sent it: everyone's pointer came back from every window, and collab-service dropped it on the same clock (TYP-1600). Its handler ignores where a change came from; this one skips what the provider applied from the room, so a window sends only its own state. The provider removes its handler on destroy() by this same property.