REPORT-50664 【移动端】body设置绝对布局，组件设置侧边导航后，还能设置组件冻结，为bug

【问题原因】
表单绝对布局下的组件结构和自适应布局下的组件结构不同，导致不能获取到body下的直接子组件名称，
从而无法获取启用了快速定位导航的组件，在移动端冻结设置面板看来就像是当前表单没有任何组件启用了
快速定位导航，所以没能在冻结组件列表中将相关组件排除出去.

【改动思路】
根据表单绝对布局的组件结构进行特殊处理，以获取Body布局组件.

designer-form/src/main/java/com/fr/design/widget/ui/designer/mobile/component/MobileComponentFrozenPane.java

@@ -14,6 +14,8 @@ import com.fr.design.widget.FRWidgetFactory;
 import com.fr.form.main.Form;
 import com.fr.form.ui.FormWidgetHelper;
 import com.fr.form.ui.Widget;
+import com.fr.form.ui.container.WBodyLayoutType;
+import com.fr.form.ui.container.WFitLayout;
 import com.fr.form.ui.container.WLayout;
 import com.fr.form.ui.container.WSortLayout;
 import com.fr.form.ui.widget.CRBoundsWidget;
@@ -123,9 +125,7 @@ public class MobileComponentFrozenPane extends BasicPane {
     }
 
     private List<String> frozenWidgets() {
-        Form form = WidgetPropertyPane.getInstance().getEditingFormDesigner().getTarget();
-        WLayout container = form.getContainer();
-        WSortLayout wSortLayout = (WSortLayout) container.getWidget(container.getWidgetCount() - 1);
+        WSortLayout wSortLayout = getBodyWSortLayout();
         List<String> list = wSortLayout.getNonContainerWidgetList();
         List<String> widgets = new ArrayList<>();
         for (String value : list) {
@@ -137,6 +137,18 @@ public class MobileComponentFrozenPane extends BasicPane {
         return widgets;
     }
 
+    private WSortLayout getBodyWSortLayout() {
+        Form form = WidgetPropertyPane.getInstance().getEditingFormDesigner().getTarget();
+        WLayout container = form.getContainer();
+        WFitLayout wFitLayout = (WFitLayout) container.getWidget(container.getWidgetCount() - 1);
+        WSortLayout wSortLayout = wFitLayout;
+        if (wFitLayout.getBodyLayoutType() == WBodyLayoutType.ABSOLUTE) {
+            CRBoundsWidget boundsWidget = (CRBoundsWidget) wFitLayout.getWidget(0);
+            wSortLayout = (WSortLayout) boundsWidget.getWidget();
+        }
+        return wSortLayout;
+    }
+
     @Override
     protected String title4PopupWindow() {
         return "ComponentFrozenPane";