fix: NetworkVariable dispose original internal#3128

NoelStephensUnity merged 2 commits intodevelop-2.0.0Unity-Technologies/com.unity.netcode.gameobjects:develop-2.0.0from

fix/networkvariable-dispose-original-internalUnity-Technologies/com.unity.netcode.gameobjects:fix/networkvariable-dispose-original-internalCopy head branch name to clipboard