[Android][Mouse] mouse.scroll glitches when moving mouse after scrolling a bit

[renaldasrep]

Found using 25ad430

1. Move mouse around (don't touch the scroll wheel)
   Result: mouse.scroll stays at (0, 0)

2. Scroll a bit and then move mouse around (don't touch the scroll wheel)
   Result: mouse.scroll.y goes to some value on and off again when moving mouse (negative, if it was scrolled down/ positive, if it was scrolled up)

[todi1856]

Fixed in 31f0ca701d6df5d232f4378ce0dc758207b141cb unity repo

[JiaUnity]

This bug also happens in Windows and MacOS standalone build, but it does not happen to Touchpad, probably because Touchpad is not recognized as a mouse.