Resolve "ballPlacementPos of GameState and RefereeMessage not correct…

…ly mirrored"

Closes #1985

See merge request main/Sumatra!1874

sumatra-commit: 51a31b16128e151237af078be831650dcf570484

modules/moduli-referee/src/main/java/edu/tigers/sumatra/referee/data/GameState.java

@@ -10,6 +10,7 @@
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
+import lombok.Getter;
 import lombok.NonNull;
 import lombok.Value;
 
@@ -31,6 +32,7 @@ public class GameState
 	@NonNull
 	ETeamColor ourTeam;
 	boolean penaltyShootout;
+	@Getter(AccessLevel.NONE)
 	IVector2 ballPlacementPosition;
 
 	/**