面包屑调整 --- fix1

src/components/app-breadcrumb/app-breadcrumb.vue

@@ -30,14 +30,14 @@ export default class Breadcrumb extends Vue {
    *
    * @memberof Breadcrumb
    */
-  @Prop() public indexViewTag: string;
+  @Prop() public indexViewTag!: string;
 
   /**
    * 首页路径
    *
    * @memberof Breadcrumb
    */
-  @Prop() public indexViewPath: string;
+  @Prop() public indexViewPath!: string;
 
   /**
    * 监听路由