Lift canceled touch inputs

If a touch input gets turned into a palm (by setting ABS_MT_TOOL_TYPE to
MT_TOOL_PALM), libinput will emit a cancel event instead of the normal
up event. The xorg wrapper needs to be able to handle a canceled touch
and lift it, otherwise these inputs will never get lifted and will stick
around forever.

Signed-off-by: Dorian Stoll <dorian.stoll@tmsp.io>
2 jobs for bugfix/handle-cancel in 3 minutes and 2 seconds (queued for 1 second)