Fixing scope expand logic for multiple scopes

[siddiqui-io]

🔧 Changes

Updated expand logic for the multiple scopes

📚 References

Github Issue #1244

🔬 Testing

This is tested manually by using multiple scopes in the terraform and confirming the request is using single string instead of a string slice

Example tf snippet used for testing (strictly following the doc recommendation):

resource "auth0_connection" "oauth2" {
  name     = "my-oauth2-connection-test-2"
  strategy = "oauth2"

  options {
    scopes = ["email", "profile"]

    scripts = {
      fetchUserProfile = <<EOF
function(accessToken, ctx, cb) {
  return cb(null, {
    user_id: "oauth2|example",
    email: "[email protected]"
  });
}
EOF
    }
  }
}

Verified this is getting set in the dashboard

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)