Use actual value of `Enum`

[failable]

class Env(str, Enum):
    Dev = "dev"
    Prod = "prod"


class Settings(BaseSettings):
    model_config = SettingsConfigDict(env_prefix="APP__", env_nested_delimiter="__")

    env: Env = Env.Dev

# `APP__ENV`

*Optional*, default value: `Env.Dev`

Would it better to use the "dev" value in this case?