[bug] accessing variables using environment is not working when using include or preload.

[gust-p]

Describe the bug
env_switcher or environments is not working

To Reproduce
Steps to reproduce the behavior:

1. Having the following folder structure

Project structure

.
├── .env
├── config
│   ├── .secrets.toml
│   └── settings.toml
│   └── config.yaml
├── db.mysql
├── kpi.py
├── main.py
├── mypy.ini
├── poetry.lock
├── pyproject.toml
└── temporary.py

2. Having the following config files:

Config files

./.env

APP_ENV="production"

and

/config/settings.toml

[development]
debug = true
database_url = 'sqlite:///dev.db'

[production]
debug = false
database_url = 'postgres:///prod.db'

and

/config/config.yaml

location: earth

3. Having the following app code:

Code

./main.py

from dynaconf import Dynaconf, inspect_settings

envvar_prefix = "APP"
env_switcher = f"{envvar_prefix}_ENV"
default_env = "development"

settings = Dynaconf(
    settings_files=["config/.secrets.toml", "config/settings.toml"],
    includes=["config/config.yaml"],
    enviroments=True,
    load_dotenv=True,
    envvar_prefix=envvar_prefix,
    env_switcher=env_switcher,
)

inspect_settings(settings, print_report=True)

with settings.using_env("production"):
    print(f"Database URL: {settings.DATABASE_URL}")
    print(f"Secret Key: {settings.SECRET_KEY}")

...

4. Executing under the following environment

Execution

# other commands and details?
# virtualenv activation? yes
python main.py or poetry run python main.py

Expected behavior
A clear and concise description of what you expected to happen.

Environment (please complete the following information):

• OS: Ubuntu 22.04 LSTS
• Dynaconf Version 3.2.4
• Frameworks in use: None

Additional context
I have tried env_switcher=APP_ENV and running the app with APP_ENV=production python main.py or trying with settings.using_env()

[gust-p]

Extra context:

When setting environments=True nothing is accessible, leading to AttributeError. And nothing on the config/config.yaml file is loaded.

header:
  env_filter: None
  key_filter: None
  new_first: 'True'
  history_limit: None
  include_internal: 'False'
current:
  ENVIROMENTS: true
  LOAD_DOTENV: true
  SECRET_KEY: supersecret
  DEVELOPMENT:
    debug: true
    database_url: sqlite:///dev.db
  PRODUCTION:
    debug: false
    database_url: postgres:///prod.db
  ENV: production
history:
- loader: env_global
  identifier: unique
  env: global
  merged: false
  value:
    ENV: production
- loader: toml
  identifier: /home/leno/Repositories/kpi_refactor/config/settings.toml
  env: default
  merged: false
  value:
    DEVELOPMENT:
      debug: true
      database_url: sqlite:///dev.db
    PRODUCTION:
      debug: false
      database_url: postgres:///prod.db
- loader: toml
  identifier: /home/leno/Repositories/kpi_refactor/config/.secrets.toml
  env: default
  merged: false
  value:
    SECRET_KEY: supersecret
- loader: set_method
  identifier: settings_module_method
  env: global
  merged: false
  value:
    SETTINGS_MODULE:
    - config/.secrets.toml
    - config/settings.toml
- loader: set_method
  identifier: envvars_first_load
  env: global
  merged: false
  value:
    ENV_FOR_DYNACONF: production
- loader: set_method
  identifier: init_kwargs
  env: global
  merged: false
  value:
    ENVIROMENTS: true
    LOAD_DOTENV: true
    INCLUDES_FOR_DYNACONF:
    - config/config.yaml
    ENV_SWITCHER_FOR_DYNACONF: APP_ENV
    ENVVAR_PREFIX_FOR_DYNACONF: APP
    SETTINGS_FILE_FOR_DYNACONF:
    - config/.secrets.toml
    - config/settings.toml

With environments=False and preload=["config/config.yaml"]:

header:
  env_filter: None
  key_filter: None
  new_first: 'True'
  history_limit: None
  include_internal: 'False'
current:
  LOAD_DOTENV: true
  ENVIROMENTS: false
  LOCATION: earth
  SECRET_KEY: supersecret
  DEVELOPMENT:
    debug: true
    database_url: sqlite:///dev.db
  PRODUCTION:
    debug: false
    database_url: postgres:///prod.db
  ENV: production
history:
- loader: env_global
  identifier: unique
  env: global
  merged: false
  value:
    ENV: production
- loader: toml
  identifier: /home/leno/Repositories/kpi_refactor/config/settings.toml
  env: default
  merged: false
  value:
    DEVELOPMENT:
      debug: true
      database_url: sqlite:///dev.db
    PRODUCTION:
      debug: false
      database_url: postgres:///prod.db
- loader: toml
  identifier: /home/leno/Repositories/kpi_refactor/config/.secrets.toml
  env: default
  merged: false
  value:
    SECRET_KEY: supersecret
- loader: set_method
  identifier: settings_module_method
  env: global
  merged: true
  value:
    SETTINGS_MODULE:
    - config/.secrets.toml
    - config/settings.toml
- loader: yaml
  identifier: /home/leno/Repositories/kpi_refactor/config/config.yaml
  env: default
  merged: false
  value:
    LOCATION: earth
- loader: set_method
  identifier: envvars_first_load
  env: global
  merged: false
  value:
    ENV_FOR_DYNACONF: production
- loader: set_method
  identifier: init_kwargs
  env: global
  merged: false
  value:
    LOAD_DOTENV: true
    ENVIROMENTS: false
    SETTINGS_FILE_FOR_DYNACONF:
    - config/.secrets.toml
    - config/settings.toml
    ENVVAR_PREFIX_FOR_DYNACONF: APP
    PRELOAD_FOR_DYNACONF:
    - config/config.yaml
    MERGE_ENABLED_FOR_DYNACONF: true
    ENV_SWITCHER_FOR_DYNACONF: APP_ENV