Scan on touch release is incompatible with pointer api

[Kuuuube]

Regression caused by #1585

The pointerup event is often hijacked by the browser itself and will not fire. The pointercancel event will be triggered if the touch point is moved before the touch is released and there will be no pointerup event in any case where the browser decides to use the event instead. For example: scrolling, zooming, panning, etc. Essentially any movement of the touch point. This makes it act almost identical to Scan on touch tap.

This is easily fixed on pages controlled by whoever desires to receive the pointerup and prevent the browser from messing with it by using the touch-action css property https://developer.mozilla.org/en-US/docs/Web/CSS/touch-action.

But since Yomitan runs on any page a user opens, this is obviously not a solution. Currently, I don't see any way to fix this and restore the old behavior of Scan on touch release (without reverting #1585 which is probably undesirable).