AnimatedSprite frameSync property only works if frameRate value > 0

• Run the attached .qml
• Set FPS to 0, and turn frameSync on
• Sprite is not animating

Setting FPS to 1 will set the sprite animating at frameSync speed (albeit after the current loop as finished - QTBUG-25043)

This contradicts the docs, which indicate:
If frameSync is set to true, it overrides both frameRate and frameDuration