新增应用状态事件注册

@CONTROL/表单/CONTROL-BASE.vue.ftl

@@ -227,7 +227,16 @@ import { Environment } from '@/environments/environment';
      * 
      *  @memberof  ${srfclassname('${ctrl.codeName}')}Base
      */
-    public errorMessages: Array<any> = [];   
+    public errorMessages: Array<any> = []; 
+
+    /**
+     * 应用状态事件
+     *
+     * @public
+     * @type {(Subscription | undefined)}
+     * @memberof ${srfclassname('${ctrl.codeName}')}Base
+     */
+    public appStateEvent: Subscription | undefined;
 
     /**
      * 设置表单项错误提示信息
@@ -1100,6 +1109,9 @@ import { Environment } from '@/environments/environment';
         if (this.dataChangEvent) {
             this.dataChangEvent.unsubscribe();
         }
+        if(this.appStateEvent){
+            this.appStateEvent.unsubscribe();
+        }
         <#if destroyed_block??>
         ${destroyed_block}
         </#if>