chore: update permissions with note about Multiplayer Services#4113

NoelStephensUnity wants to merge 2 commits into

develop-2.0.0Unity-Technologies/com.unity.netcode.gameobjects:develop-2.0.0from

chore/doc/add-note-permissions-not-visible-if-mps-not-installedUnity-Technologies/com.unity.netcode.gameobjects:chore/doc/add-note-permissions-not-visible-if-mps-not-installedCopy head branch name to clipboard