fix: connection approval cannot exceed mtu size - backport (3564)#3565

EmandM merged 5 commits intodevelopUnity-Technologies/com.unity.netcode.gameobjects:developfrom

fix/connection-approval-cannot-exceed-MTU-size-backportUnity-Technologies/com.unity.netcode.gameobjects:fix/connection-approval-cannot-exceed-MTU-size-backportCopy head branch name to clipboard