ScreenshotSelector: handle rotation issues

Disable rotation while the screenshot selector is visible,
because it cannot handle rotation internally,
and rotating while a certain selection is made might cause
the selection to go off-screen.

Also, adjust the crop coordinates so that they function properly.
The native screenshot taking functions expect the coordinates
to be in a physical left-to-right, top-to-bottom order, which
is not the case for 90 degree rotation, where the top is
actually the right physical edge, or for 270 degree rotation,
where the right is actually the top physical edge, or for
180 degrees, where both axes are flipped.

https://gitlab.com/LineageOS/issues/android/-/issues/1749

Change-Id: I18da90592cf7baa46547554df954bdb071961311