macOS 27 beta routes contentsScale changes (window moving between
screens) through Core Animation's implicit-animation path, which builds
a presentation copy of the layer via init(layer:). Our override re-ran
visual setters on that copy, and -[CAOpenGLLayer setColorspace:]
dereferences render state the shadow copy doesn't own, crashing with
EXC_BAD_ACCESS.
Drop the redundant setter block (super.init(layer:) already copies
presentation values) and disable implicit actions around the
contentsScale writes in MPVOGLView so the presentation-copy path is
never entered for scale updates.
ce7e9cbde7