fix(ssr): setNavigationBarTitle

packages/uni-h5/dist/uni-h5.cjs.js

@@ -9645,8 +9645,10 @@ const getSystemInfoSync = /* @__PURE__ */ defineSyncApi("getSystemInfoSync", ()
 });
 function updateDocumentTitle(title) {
   {
-    const ctx = vue.useSSRContext();
-    ctx[uniShared.UNI_SSR_TITLE] = title;
+    const ssrContext = getApp$1().$.appContext.provides[vue.ssrContextKey];
+    if (ssrContext) {
+      ssrContext[uniShared.UNI_SSR_TITLE] = title;
+    }
   }
 }
 function useDocumentTitle(pageMeta) {

packages/uni-h5/src/helpers/useDocumentTitle.ts

-import { watchEffect, onActivated, useSSRContext } from 'vue'
+import { watchEffect, onActivated, ssrContextKey } from 'vue'
 import { UNI_SSR_TITLE } from '@dcloudio/uni-shared'
+import { getApp } from '../framework/setup/app'
 
 export function updateDocumentTitle(title: string) {
   if (__NODE_JS__) {
-    const ctx = useSSRContext()
-    ctx![UNI_SSR_TITLE] = title
+    // updateDocumentTitle 可能是异步调用，此时使用 useSSRContext 获取，可能没有 instance
+    const ssrContext = getApp().$.appContext.provides[ssrContextKey]
+    if (ssrContext) {
+      ssrContext[UNI_SSR_TITLE] = title
+    }
   } else {
     document.title = title
   }