MonitorUpdateRequest accepts illegal params

Comienza con datadog_api_client.v1.model.monitor_update_request.MonitorUpdateRequest y compara sus parámetros aceptados con el atributo Monitor.read_only_vars mencionado en el issue. Lee la ruta de inicialización del modelo en datadog_api_client/model_utils.py y verifica después que los campos de monitor de solo lectura se excluyan de la construcción de actualizaciones, mientras que los campos de actualización válidos sigan funcionando.

Describe the bug
The MonitorUpdateRequest class accepts several params that are read only attributes of a monitor and if you pass any value for one of these params creation of the MonitorUpdateRequest object fails and raises an Exception.

To Reproduce
Steps to reproduce the behavior:

1. Import the MonitorUpdateRequest object
   from datadog_api_client.v1.model.monitor_update_request import MonitorUpdateRequest
2. Follow the documentation for what params to pass when creating the object
3. See error

>>> update = MonitorUpdateRequest(created=datetime(2025, 10, 20, 0, 6, 37, 825141))
Traceback (most recent call last):
  File "<python-input-9>", line 1, in <module>
    update = MonitorUpdateRequest(created=datetime(2025, 10, 20, 0, 6, 37, 825141))
  File "~/git/example/.venv/lib/python3.14/site-packages/datadog_api_client/v1/model/monitor_update_request.py", line 211, in __init__
    super().__init__(kwargs)
    ~~~~~~~~~~~~~~~~^^^^^^^^
  File "~/git/example/.venv/lib/python3.14/site-packages/datadog_api_client/model_utils.py", line 445, in __init__
    raise ApiAttributeError(f"`{var_name}` is a read-only attribute.")
datadog_api_client.exceptions.ApiAttributeError: `created` is a read-only attribute.
>>> update = MonitorUpdateRequest(id=228483234)
Traceback (most recent call last):
  File "<python-input-10>", line 1, in <module>
    update = MonitorUpdateRequest(id=228483234)
  File "~/git/example/.venv/lib/python3.14/site-packages/datadog_api_client/v1/model/monitor_update_request.py", line 211, in __init__
    super().__init__(kwargs)
    ~~~~~~~~~~~~~~~~^^^^^^^^
  File "~/git/example/.venv/lib/python3.14/site-packages/datadog_api_client/model_utils.py", line 445, in __init__
    raise ApiAttributeError(f"`{var_name}` is a read-only attribute.")
datadog_api_client.exceptions.ApiAttributeError: `id` is a read-only attribute.

Expected behavior
This class should not accept parameters that are restricted from being updated via the API as it exists solely to update monitors via the API

Environment and Versions (please complete the following information):
datadog-api-client v2.50.0

Additional context
This issue was hit when i was trying to bulk update existing monitors. The workflow was get monitor details from the API, edit them with the changes i wanted, then update the monitor. I had to loop through all the params to identify the read-only ones before i discovered the Monitor.read_only_vars attribute