When uploading an avatar which has an EditorOnly tagged object in the network id list the SDK now fails with the error

> The VRCSDK build was aborted because the VRCSDKPreprocessAvatarCallback 'AssignAvatarNetworkIDs' threw an exception

The old SDK (3.5.1) silently ignores these and uploads anyway.

This makes some Avatars with EditorOnly objects (for example, assets with physbones) impossible to upload anymore.

A workaround is to unpack the prefabs and remove the EditorOnly tagged objects completely, which is destructive and should be avoided.