Switching between OAuth 2.0 and Bearer authentication based on environment

[Scrumplex]

I want to be able to use a fixed bearer for the environment that targets a local instance of my application, while still being able to use OAuth2 for the staging and prod instances of the application.

My naive approach is the following:

auth {
  mode: {{authType}}
}

auth:bearer {
  token: {{token}}
}

auth:oauth2 {
  grant_type: client_credentials
  access_token_url: {{kcAuthorizationUrl}}
  refresh_token_url:
  client_id: {{kcClientId}}
  client_secret: {{kcClientSecret}}
  scope: openid
  credentials_placement: body
  credentials_id: credentials
  token_placement: header
  token_header_prefix: Bearer
  auto_fetch_token: true
  auto_refresh_token: false
}

But even when all environments define all these variables (authType, token, and kc*), the mode selector in the UI shows "No Auth" here.

Note that I am already using Bruno 2.x.x. So I have moved away from my (previously working) scripting-based approach where I would just use Bearer for the collection.