bug(web): modipress held from multitapping releases early if first key from new layer is pressed too early

[jahorton]

Does reproduce:

1. With sil_euro_latin 3.0+...
2. Triple tap the numeric key, holding the final tap instead of releasing it.
3. Quickly tap any non-frame key.

Result: the key produces its text and you are immediately returned to the default layer.

Does not reproduce:

1. With sil_euro_latin 3.0+...
2. Triple tap the numeric key, holding the final tap instead of releasing it.
3. Wait ~0.5 seconds.
4. Tap any non-frame key.

You will remain on the same layer until the held, layer-swapping finger is lifted.

Does not reproduce:

1. With sil_euro_latin 3.0+...
2. Press and hold the numeric key.
3. Quickly tap any key from the second or third row aside from the key in s position.

You will remain on the numeric layer.

Thus, this only triggers for modipresses reached by multitaps, and only if the first key that would normally trigger a layer swap happens before the multitap timer completes.