Add conditional check for StratCon before processing mass rout

Ensured that mass rout processing in AtBContract only occurs when StratCon is enabled in campaign options. This change prevents unnecessary operations and aligns with the intended functionality of user-defined campaign options.

MekHQ/src/mekhq/campaign/mission/AtBContract.java

@@ -542,7 +542,9 @@ public void checkMorale(Campaign campaign, LocalDate today) {
                 setEndDate(today.plusDays(1));
             }
 
-            processMassRout(campaign, getStratconCampaignState());
+            if (campaign.getCampaignOptions().isUseStratCon()) {
+                processMassRout(campaign, getStratconCampaignState());
+            }
         }
 
         // Process the results of the reinforcement roll