fix: networkvariable collections can be modified without write permissions [backport]#3126

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

fix/networkvariable-collections-can-be-modified-without-write-permissions-backportUnity-Technologies/com.unity.netcode.gameobjects:fix/networkvariable-collections-can-be-modified-without-write-permissions-backportCopy head branch name to clipboard