Android: Fix repaint on rotation

After f89f099c55576992b39a8021aace64ff32747624, we no longer
post a geometry-change and expose event when calling setGeometry,
which the Android plugin depended on. This caused the window to
stay the same size when it was resized by orientation changes.
We put back the events in the code that calls setGeometry()
instead.

Task-number: QTBUG-32878
Change-Id: I449515dda07c839e0991c5a7031a972ca9c74dff
Reviewed-by: BogDan Vatra <bogdan@kde.org>