fix: add getInitData api (#6707)

Author: zllkjc

.changeset/afraid-walls-do.md

@@ -0,0 +1,6 @@
+---
+'@modern-js/runtime': patch
+---
+
+fix: add missing getInitData api
+fix: 添加缺失的 getInitData 接口

packages/runtime/plugin-runtime/src/core/compatible.tsx

@@ -234,6 +234,9 @@ export const useRuntimeContext = () => {
         request: baseSSRContext.request || ({} as TSSRContext['request']),
         response: baseSSRContext.response || ({} as TSSRContext['response']),
         logger: baseSSRContext.logger || ({} as TSSRContext['logger']),
+        getInitData: () => {
+          return Object.freeze(context.initialData);
+        },
       }
     : ({} as TSSRContext);