二期：修复图片加载失败无法点击的问题

package.json

@@ -1,6 +1,6 @@
 {
   "name": "aix-win",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "An Electron application with Vue",
   "main": "./out/main/index.js",
   "author": "example.com",

src/renderer/src/views/prepare/index.vue

@@ -3,8 +3,8 @@
     <ChooseTextbook @change-book="nodeClick" @node-click="nodeClick" />
     <div class="page-right">
       <div class="header-top flex">
-        <div class="textbook-img">
-          <el-image style="width: 80px; height: 110px" :src="curBookImg" @click="navtoPdf" />
+        <div class="textbook-img" @click="navtoPdf">
+          <el-image style="width: 80px; height: 110px" :src="curBookImg" />
           <el-progress
             v-if="downloadNum > 0 && downloadNum < 100"
             style="position: absolute; left: 0; z-index: 999"