[android] Support stylus barrel rotation

Previously the Android stylus input read the tilt orientation as the stylus barrel rotation, which is bogus. It now reads the Z rotation axis instead, which is how Wacom styluses input barrel rotation, which is hopefully what other styluses will do as well.

K-A thread: https://krita-artists.org/t/barrel-rotations-seems-doesnt-work-in-android-system/184547

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