touch_notify_motion() sends motion even after touch point focus has been cleared

[ammen99]

trafficstars

As a result it is possible for clients to receive touch.motion after touch.up, which is a violation of the wayland protocol. This causes many clients to crash (I've tested GTK apps).

---

wlroots has migrated to gitlab.freedesktop.org. This issue has been moved to:

https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/996