`Supabase.initialize` throws an `AuthException` when an `accessToken` is provided

[gibsorya]

Describe the bug
Hello! I am trying to provide an Auth0 access token to Supabase, but find myself unable to do so. After a little debugging I discovered that the Supabase initialize code is still initializing an instance of SupabaseAuth even with an accessCode, which references Supabase.instance.client.auth.
I believe this was introduced in #999

To Reproduce
Steps to reproduce the behavior:

1. Initialize Supabase with an access token

Expected behavior
Supabase.initialize should accept a custom access token.

Screenshots
Here is the call stack for this bug:

Here is the exception being thrown:

Version:
On Linux/macOS

├── supabase_flutter 2.7.0
│   ├── supabase 2.4.0
│   │   ├── functions_client 2.3.3
│   │   ├── gotrue 2.9.0
│   │   ├── postgrest 2.2.0
│   │   ├── realtime_client 2.3.0
│   │   ├── storage_client 2.1.0

Additional context
For context, here is the code where I am initializing Supabase:

  final auth0 = Auth0(Environment.auth0Domain, Environment.auth0ClientId);

  await Supabase.initialize(
    url: Environment.supabaseUrl,
    anonKey: Environment.supabaseAnonKey,
    accessToken: () async {
      final credentials = await auth0.credentialsManager.credentials();
      return credentials.accessToken;
    },
  );

Here is the exception message:

Unhandled Exception: AuthException(message: Supabase Client is configured with the accessToken option, accessing supabase.auth is not possible., statusCode: null, errorCode: null)

[Vinzent03]

Please show the actual thrown exception. It should contain a message or similar to give some context on what's the issue. It should be shown in vscode when debugging and printed to the console, if not caught and handled.

[gibsorya]

Please show the actual thrown exception. It should contain a message or similar to give some context on what's the issue. It should be shown in vscode when debugging and printed to the console, if not caught and handled.

Sorry about that! I updated the original post to include that info.