Make the code by @matthewjrichey found in issue #5031 into a PR:
> [...] discovered that `AMotionEvent_getActionButton` is only available on
> Android NDK 33 (Android 13) or higher. I came up with a working fix for the
> problem, which is tested and working on Android 12.
Done-by: @matthewjrichey
On android, the handle is the same as the cursor color and the cursor
color is usually the "accent" color.
We can't know the accent color from the native code, but we know the
selection color which is the accent color with a lesser opacity.
