fix：修改问题

1 chart编辑界面metric选择优化
2 webshell关闭询问弹出，在只有一个连接的时候不提示

nezha-fronted/src/components/cli/webSSH.vue

@@ -266,13 +266,15 @@
       //可以做最小化的处理，点击窗口外的空白处会调用此方法
       closeConsole(){
         //弹窗询问是否关闭所有链接，关闭窗口？复选框：记住我的选择（用户勾选且选择yes 后，保存到localstorage，之后关闭不再提醒）
-        //localStorage.getItem('nz-language') ? localStorage.getItem('nz-language') : 'en', //en/cn
-        //localStorage.setItem('nz-language', this.lang);
-        let remember = localStorage.getItem('close-shell-remember') ? localStorage.getItem('close-shell-remember') : false;
-        if(remember){
+        if(this.editableTabs.length===1){
           this.closeShellWindow();
         }else {
-          this.closeConfirmShow = true;
+          let remember = localStorage.getItem('close-shell-remember') ? localStorage.getItem('close-shell-remember') : false;
+          if(remember){
+            this.closeShellWindow();
+          }else {
+            this.closeConfirmShow = true;
+          }
         }
       },
       cancleConfirm(){