fix: resolve mutable default argument in getAddressForFid

[dajiaohuang]

Summary

修复 getAddressForFid 函数中的可变默认参数问题。

问题

原代码使用了可变对象作为默认参数：

hubRequestOptions = {
  headers: {
    api_key: DEFAULT_HUB_API_KEY,
  },
},

这个默认对象在所有调用中共享，如果调用者修改了它，会影响后续调用。

Fix

• 创建新的 requestOptions 对象，每次调用时都是 fresh 的
• 正确合并用户提供的 hubRequestOptions 和默认的 api_key header

[vercel]

@dajiaohuang is attempting to deploy a commit to the Discove Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

Additional Suggestion:

Reducer only assigns acc[type] when a value already exists, so the first (and typically only) message per user data type is never stored, making getUserDataForFid return all-undefined fields.

[vercel]

Caller-supplied api_key header is silently overwritten by the hardcoded DEFAULT_HUB_API_KEY in getAddressForFid

[dajiaohuang]

Addressed the current review feedback in the latest commit. The user-data reducer now stores the first value for each type and replaces it only when a newer timestamp is seen, so first-seen fields are no longer lost. Validation: git diff --check passed. The local checkout has no Yarn binary/dependencies, so the package test suite could not run here.