Updated Exception Messages For Nag Dialogs

- Changed exception messages in `AdminStrainNagDialog` and `DeploymentShortfallNagDialog` to include the class name dynamically using `getClass().getSimpleName()`.
- Enhances error clarity by specifying the exact dialog class in the exception output.

Author: IllianiBird

MekHQ/src/mekhq/gui/dialog/nagDialogs/AdminStrainNagDialog.java

@@ -85,7 +85,10 @@ public AdminStrainNagDialog(final Campaign campaign) {
                 MekHQ.getMHQOptions().setNagDialogIgnore(NAG_ADMIN_STRAIN, true);
                 cancelAdvanceDay = false;
             }
-            default -> throw new IllegalStateException("Unexpected value in AdminStrainNagDialog: " + choiceIndex);
+            default -> throw new IllegalStateException("Unexpected value in " +
+                                                             getClass().getSimpleName() +
+                                                             ": " +
+                                                             choiceIndex);
         }
     }
 

MekHQ/src/mekhq/gui/dialog/nagDialogs/DeploymentShortfallNagDialog.java

@@ -90,7 +90,10 @@ public DeploymentShortfallNagDialog(final Campaign campaign) {
                 MekHQ.getMHQOptions().setNagDialogIgnore(NAG_SHORT_DEPLOYMENT, true);
                 cancelAdvanceDay = false;
             }
-            default -> throw new IllegalStateException("Unexpected value in AdminStrainNagDialog: " + choiceIndex);
+            default -> throw new IllegalStateException("Unexpected value in " +
+                                                             getClass().getSimpleName() +
+                                                             ": " +
+                                                             choiceIndex);
         }
     }