Crash when trying to view replays with ReplayMod

All the info can be found here: https://github.com/ReplayMod/ReplayMod/issues/796

tldr:
Viewing a replay via ReplayMod when having LambdaMap installed crashes the game since LambdaMap assumes if you are not in singleplayer mode, you must be in multiplayer mode. Which is incorrect in this scenario.