Move SupportPowerDecisions to a single parent node.

This is required before we can force all trait
properties to match a TraitInfo-defined field.

OpenRA.Mods.Common/UpdateRules/UpdatePath.cs

@@ -54,6 +54,7 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new DefineOwnerLostAction(),
 				new RenameEmitInfantryOnSell(),
 				new SplitRepairDecoration(),
+				new MoveHackyAISupportPowerDecisions(),
 			})
 		};