fix: NetworkManager instantiate & destroy notifications and player spawn prefab offset (backport)#3089

NoelStephensUnity merged 6 commits intodevelopUnity-Technologies/com.unity.netcode.gameobjects:developfrom

fix/networkmanager-instantiatedestroy-notifications-and-playerspawn-prefab-offset-backportUnity-Technologies/com.unity.netcode.gameobjects:fix/networkmanager-instantiatedestroy-notifications-and-playerspawn-prefab-offset-backportCopy head branch name to clipboard