fix(h5): improve page id

src/core/service/plugins/page/create-page.js

+import {
+  hasOwn
+} from 'uni-shared'
+
 export default function createPage (pageVm) {
   const $route = pageVm.$route
   pageVm.route = $route.meta.pagePath
+
+  const id = hasOwn($route.params, '__id__') ? $route.params.__id__ : $route.meta.id
   pageVm.__page__ = {
-    id: $route.params.__id__,
+    id,
     path: $route.path,
     route: $route.meta.pagePath,
     meta: Object.assign({}, $route.meta)
   }
   // 兼容 mpvue
   pageVm.$vm = pageVm
-  pageVm.$root = pageVm
+  pageVm.$root = pageVm
   pageVm.$holder = pageVm.$parent.$parent
   // 补充 mp 相关属性
   pageVm.$mp = {
@@ -19,4 +25,4 @@ export default function createPage (pageVm) {
     // 暂不支持
     status: ''
   }
-}
+}