Fixes: VKB is correctly positioned after 180 degree rotation.
Fixes: VKB is correctly positioned after 180 degree rotation.

RevBy: TrustMe
Details: Previously used signal to detect beginning of rotation
was orientationAboutToChange is not emitted when orientation does
not change. We now use the new orientationAngleChanged signal.
Incorrect position was because MKeyboardHost::prepareOrientationChange
was never called.

KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,develersrl/maliit-demo-qml,KDE/plasma-maliit-plugins,maliit/plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,RHawkeyed/plugins,maliit/plugins,maliit/plugins,KDE/plasma-maliit-plugins,maliit/plugins,KDE/plasma-maliit-plugins