REPORT-144196 fix:多选删除模板UI死锁问题修复

designer-base/src/main/java/com/fr/design/mainframe/EastRegionContainerPane.java

@@ -385,8 +385,10 @@ public class EastRegionContainerPane extends UIEastResizableContainer {
     }
 
     private void initContentPane() {
+        UIUtil.invokeLaterIfNeeded(() -> {
             initRightPane();
             initLeftPane();
+        });
     }
 
     // 右侧属性面板