avif: return `false` in `canRead()` when `imageIndex >= imageCount`
Otherwise when cache: false
is set in AnimatedImage, QMovie will try
to read the image forever.
BUG: 460085 FIXED-IN: 5.100
Otherwise when cache: false
is set in AnimatedImage, QMovie will try
to read the image forever.
BUG: 460085 FIXED-IN: 5.100