feat: 在我的问题页面添加返回按钮；在交易页面优化订单书组件的布局

src/views/trade-settings/my-issues/index.vue

@@ -62,6 +62,7 @@ onBeforeMount(() => {
   <IonPage>
     <IonHeader class="ion-no-border">
       <ion-toolbar class="ion-toolbar">
+        <ui-back-button slot="start" text="" />
         <ion-title>{{ t('myIssues.title') }}</ion-title>
       </ion-toolbar>
       <ion-toolbar class="ion-toolbar px-3">

src/views/trade/index.vue

@@ -173,7 +173,7 @@ function signIn() {
             <ConfirmOrder :form="form" />
           </ion-modal>
         </div>
-        <div class="col-span-2">
+        <div class="col-span-2 flex items-center">
           <OrderBook :symbol="form.symbol" />
         </div>
       </div>