This patch introduces a temporary hack.
So here is the thing. Ideally, we DO NOT want to emit this reason.
It does not makes sense. However, all notable update reasons
are not clearly identified so far. Why is it a problem? The
`matrix_sdk_ui::room_list_service::RoomList` is listening this stream
of [`RoomInfoNotableUpdate`], and emits an update on a room item if
it receives a notable reason. Because all reasons are not identified,
we are likely to miss particular updates, and it can feel broken.
Ultimately, we want to clearly identify all the notable update reasons,
and remove this one.
Ivan Enderlin
74e2e767dd