REPORT-21689 水印密度最小值限制，根据交互提供的内容补充

designer-base/src/main/java/com/fr/design/gui/ispinner/UISpinner.java

@@ -102,6 +102,10 @@ public class UISpinner extends JPanel implements UIObserver, GlobalNameObserver
         return lessMinValue;
     }
 
+    public void resetLessMinValue() {
+        lessMinValue = false;
+    }
+
     public void setValue(double value) {
         setValue(value, true);
     }

designer-base/src/main/java/com/fr/design/report/WatermarkPane.java

@@ -276,6 +276,7 @@ public class WatermarkPane extends BasicPane {
                 if (!spinner.isLessMinValue()) {
                     return;
                 }
+                spinner.resetLessMinValue();
                 createGapDialog(new StringBuilder(messageStr).append(limitMinValue).toString());
             }
         };
@@ -295,6 +296,7 @@ public class WatermarkPane extends BasicPane {
                 if (!spinner.isLessMinValue()) {
                     return;
                 }
+                spinner.resetLessMinValue();
                 createGapDialog(new StringBuilder(messageStr).append(limitMinValue).toString());
             }
         };