fix: network time system tests should use double fixed delta time#3373

NoelStephensUnity merged 3 commits intodevelopUnity-Technologies/com.unity.netcode.gameobjects:developfrom

fix/NetworkTimeSystemTests-should-use-doublesUnity-Technologies/com.unity.netcode.gameobjects:fix/NetworkTimeSystemTests-should-use-doublesCopy head branch name to clipboard