### Apache Airflow version

2.5.0

### What happened

In [Airflow 2.4.0](https://github.com/apache/airflow/blob/main/RELEASE_NOTES.rst#airflow-240-2022-09-19), a new feature was added that added an option to mask sensitive data in UI configuration page ([PR](https://github.com/apache/airflow/pull/25346)). I have set `AIRFLOW__WEBSERVER__EXPOSE_CONFIG` as `NON-SENSITIVE-ONLY`.

The feature is working partially as the `airflow.cfg` file display only has [sensitive configurations](https://github.com/apache/airflow/blob/2.5.0/airflow/configuration.py#L149-L160) marked as `< hidden >`. However, the `Running Configuration` table below the file display has all configuration set via environment variables marked as `< hidden >` which I believe is unintended.

I did not change `airflow.cfg` so the value here is displaying the default value of `False` as expected.

![Screen Shot 2023-01-05 at 1 39 11 PM](https://user-images.githubusercontent.com/5952735/210891805-1a5f6a6b-1afe-4d05-b03d-61ac583441fc.png)

The value for `expose_config` I expect to be shown as `NON-SENSITIVE-ONLY` but it shown as `< hidden >`.

![Screen Shot 2023-01-05 at 1 39 27 PM](https://user-images.githubusercontent.com/5952735/210891803-dba826d4-2d3c-4781-aeae-43c46e31fa89.png)


### What you think should happen instead

As mentioned previously, the value for `expose_config` I expect to be shown as `NON-SENSITIVE-ONLY`.

Only the [sensitive variables](https://github.com/apache/airflow/blob/2.5.0/airflow/configuration.py#L149-L160) should be set as `< hidden >`.

### How to reproduce

Set an Airflow configuration through the environment variable and check on the Configuration page.

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""
    Ensure that all secrets backends are loaded.
    If the secrets_backend_list contains only 2 default backends, reload it.
    """
    
    if len(secrets_backend_list) == 2:
        return initialize_secrets_backends()
    return secrets_backend_list
def get_custom_secret_backend() -> BaseSecretsBackend | None:
    """Get Secret Backend if defined in airflow.cfg."""
    secrets_backend_cls = conf.getimport(section="secrets", key="backend")
    if not secrets_backend_cls:
        return None
    try:
        backend_kwargs = conf.getjson(section="secrets", key="backend_kwargs")
        if not backend_kwargs:
            backend_kwargs = {}
        elif not isinstance(backend_kwargs, dict):
            raise ValueError("not a dict")
    except AirflowConfigException:
        log.warning("Failed to parse [secrets] backend_kwargs as JSON, defaulting to no kwargs.")
        backend_kwargs = {}
    except ValueError:
        log.warning("Failed to parse [secrets] backend_kwargs into a dict, defaulting to no kwargs.")
        backend_kwargs = {}
    return secrets_backend_cls(**backend_kwargs)
def initialize_secrets_backends() -> list[BaseSecretsBackend]: