CliSuppress does not work on sub-models

[jggrant]

Hi,

The fields of a sub-model annotated with CliSuppress are still visible in the CLI help message. I would expect them to be hidden as well.

Example code:

import pydantic
import pydantic_settings

class SubModel(pydantic.BaseModel):
    hidden_a: int
    hidden_b: int

class Settings(pydantic_settings.BaseSettings, cli_parse_args=True):
    visible_str: str
    hidden_str: pydantic_settings.CliSuppress[str]
    hidden_obj: pydantic_settings.CliSuppress[SubModel]

settings = Settings()

Result:

usage: test.py [-h] [--visible_str str] [--hidden_obj JSON] [--hidden_obj.hidden_a int] [--hidden_obj.hidden_b int]

options:
  -h, --help            show this help message and exit
  --visible_str str     (required)

hidden_obj options:
  --hidden_obj JSON     set hidden_obj from JSON string
  --hidden_obj.hidden_a int
                        (required)
  --hidden_obj.hidden_b int
                        (required)

Reproduced with pydantic-settings 2.8.1

Thanks!

[kschwab]

@hramezani @jggrant opened #587 for resolution.