Init SlowTask fix for PublishManifest #138

Job	Run time
unifyInputs	3s
changes	15s
build (BEAMPROJ_SteamDemo) / build	42m 30s
build (BEAMPROJ_LiveOpsDemo) / build	38m 37s
build (BEAMPROJ_DiscordDemo) / build	29m 59s
build (BEAMPROJ_HathoraDemo) / build	29m 59s
	2h 21m 23s

Provide feedback