解决设备档案图片预览（PopupManager层级导致页面卡顿问题）

src/business/platform/file/image/index.vue

@@ -521,7 +521,8 @@ export default {
     // },
     // 预览
     clickHandler(file, index) {
-      this.zIndex = this.fixZIndex()
+      // this.zIndex = this.fixZIndex()
+      this.zIndex = 99999999
       this.initialIndex = index
       this.showViewer = true
     },