Enhanced INVALID formation level checking

Expanded the case matching for the INVALID formation level to include the string "Invalid Formation". This improves robustness in identifying invalid formation levels in the system.

MekHQ/src/mekhq/campaign/force/FormationLevel.java

@@ -18,12 +18,12 @@
  */
 package mekhq.campaign.force;
 
-import java.util.ResourceBundle;
-
 import mekhq.MekHQ;
 import mekhq.campaign.Campaign;
 import mekhq.campaign.universe.Faction;
 
+import java.util.ResourceBundle;
+
 public enum FormationLevel {
     // region Enum Declarations
     REMOVE_OVERRIDE("FormationLevel.REMOVE_OVERRIDE.text", "FormationLevel.REMOVE_OVERRIDE.description", -1, true, true,
@@ -218,7 +218,7 @@ public static FormationLevel parseFromString(final String formationLevel) {
         return switch (formationLevel) {
             case "0", "Remove Override" -> REMOVE_OVERRIDE;
             case "1", "None" -> NONE;
-            case "2", "Invalid" -> INVALID;
+            case "2", "Invalid", "Invalid Formation" -> INVALID;
 
             // Inner Sphere
             case "3", "Lance" -> LANCE;