Preserve safe passage destination (#8468)

src/main/csharp/net/eagle0/clients/unity/eagle0/Assets/Eagle/CommandSelectors/AttackDecisionCommandSelector.cs

@@ -53,6 +53,8 @@ namespace eagle {
         public TMP_Text goldLabel;
         public TMP_Text foodLabel;
 
+        private ProvinceId _safePassageDestinationProvinceId;
+
         private AttackDecisionAvailableCommand AttackDecisionCommand =>
                 _availableCommand.AttackDecisionCommand;
 
@@ -67,7 +69,12 @@ namespace eagle {
                 if (withdrawToggle.isOn)
                     return new AttackDecisionType { Withdraw = new WithdrawDecision() };
                 if (safePassageToggle.isOn)
-                    return new AttackDecisionType { SafePassage = new SafePassageDecision() };
+                    return new AttackDecisionType {
+                        SafePassage =
+                                new SafePassageDecision {
+                                    ToProvinceId = _safePassageDestinationProvinceId
+                                }
+                    };
 
                 throw new Exception("No decision selected");
             }
@@ -141,6 +148,7 @@ namespace eagle {
                         break;
                     case AttackDecisionType.SealedValueOneofCase.SafePassage:
                         enableSafePassage = true;
+                        _safePassageDestinationProvinceId = ad.SafePassage.ToProvinceId;
                         break;
                 }
             }