调整layout

src/layout/components/AppMain.vue

 <template>
   <section class="app-main">
     <transition name="fade-transform" mode="out-in">
-       <keep-alive >
-          <router-view v-if="cachedViews.includes(key)" :key="key" />
+       <keep-alive v-if="cachedViews.includes(key)" >
+          <router-view  :key="key" />
         </keep-alive>
-         <router-view v-if="!cachedViews.includes(key)" :key="key" />
-
+         <router-view v-else :key="key" />
     </transition>
   </section>
 </template>