This avoids CoreAnimation from capturing the name from a background thread deep within the internals
of AVPlayerLayer, which commits transactions off the main thread. If the main thread is also accessing
properties that require the lock, in very specific app architectures relying on AVPlayerLayer, this
can cause a deadlock.
The "name" property is primarily used by ASDK's unit test infrastructure, so I'm leaving it in place for
that purpose - and it may still be used for debugging, if someone wants to set it. It will remain
possible to get the node from a layer or view with asyncdisplaykit_node, and access name from there.
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