Can not create proxy OAuth flow with google OAuth

[YashwantRamAB]

Describe the bug
Trying to create a Proxy OAuth flow with google OAuth but its failing with the invalid redirect uri error

To Reproduce
Steps to reproduce the behavior:

1. Redirects to /authorize
2. Throws invalid redirect uri error

Expected behavior
It should successfully authenticate

Logs
Response from /authorize

{
"error": "invalid_request",
"error_description": "Unregistered redirect_uri"
}

[wille]

The client object returned by clientsStore.getClient() must include the redirect_uri that google uses.

client = await provider.clientsStore.getClient(client_id);
if (!client) {
    throw new InvalidClientError('Invalid client_id');
}

if (redirect_uri !== undefined) {
    if (!client.redirect_uris.includes(redirect_uri)) {
      throw new InvalidRequestError('Unregistered redirect_uri');
    }
....

[YashwantRamAB]

The client object returned by clientsStore.getClient() must include the redirect_uri that google uses.

client = await provider.clientsStore.getClient(client_id);
if (!client) {
throw new InvalidClientError('Invalid client_id');
}

if (redirect_uri !== undefined) {
if (!client.redirect_uris.includes(redirect_uri)) {
throw new InvalidRequestError('Unregistered redirect_uri');
}
....

Below is my google redirect uri and the uri I am using in getClient. I am pretty sure I am configuring it properly, please correct me if I am wrong.

getClient: async (client_id) => {
    console.log(`Providing client credentials for client_id: ${client_id}`);

    return {
      client_id,
      client_secret: GOOGLE_CLIENT_SECRET,
      redirect_uris: ["http://localhost:8000/callback","http://localhost:8000/auth/callback"],
    };
  }

I think the redirect URI is not properly changing or being handled.

Below is the authorize URL and if you see the redirect uri is wrong. It's the ephemeral ports or vs code.

http://localhost:8000/authorize?client_id={client_id}&response_type=code&code_challenge=FjG97iVnOYpXWeniwfyPZh883-QMR9ja2bK0aRVglGQ&code_challenge_method=S256&scope=openid+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email&resource=http%3A%2F%2Flocalhost%3A8000%2Fmcp&redirect_uri=http%3A%2F%2F127.0.0.1%3A33418%2F&state=4x%2FOXDggFGmsBpWlR%2B6TOg%3D%3D