Fix an issue where a bbox was downloaded twice

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/GetDataRunnable.java

@@ -79,7 +79,7 @@ public class GetDataRunnable extends RecursiveTask<DataSet> implements CancelLis
      */
     public GetDataRunnable(List<BBox> bbox, DataSet dataSet, ProgressMonitor monitor) {
         super();
-        this.bbox = new ArrayList<>(bbox);
+        this.bbox = bbox.stream().distinct().collect(Collectors.toList());
         this.dataSet = dataSet;
         this.monitor = Optional.ofNullable(monitor).orElse(NullProgressMonitor.INSTANCE);
         this.monitor.addCancelListener(this);

src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIDataUtils.java

@@ -370,7 +370,7 @@ public final class MapWithAIDataUtils {
                 returnBounds.add(new BBox(lowerLeft, upperRight));
             }
         }
-        return returnBounds;
+        return returnBounds.stream().distinct().collect(Collectors.toList());
     }
 
     /**
@@ -381,7 +381,7 @@ public final class MapWithAIDataUtils {
     public static List<BBox> reduceBBoxSize(List<BBox> bboxes) {
         final List<BBox> returnBBoxes = new ArrayList<>();
         bboxes.forEach(bbox -> returnBBoxes.addAll(reduceBBoxSize(bbox)));
-        return returnBBoxes;
+        return returnBBoxes.stream().distinct().collect(Collectors.toList());
     }
 
     /**