### 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)

assert conf.has_option("core", "FERNET_KEY")
        assert not conf.has_option("core", "FERNET_KEY_CMD")
        fernet_key = conf.get("core", "FERNET_KEY")
        with conf_vars({("core", "FERNET_KEY_CMD"): "printf HELLO"}):
            fallback_fernet_key = conf.get("core", "FERNET_KEY")
        assert fernet_key == fallback_fernet_key
    def test_config_throw_error_when_original_and_fallback_is_absent(self):
        assert conf.has_option("core", "FERNET_KEY")
        assert not conf.has_option("core", "FERNET_KEY_CMD")
        with conf_vars({("core", "fernet_key"): None}):
            with pytest.raises(AirflowConfigException) as ctx:
                conf.get("core", "FERNET_KEY")
        exception = str(ctx.value)
        message = "section/key [core/fernet_key] not found in config"
        assert message == exception
    def test_config_override_original_when_non_empty_envvar_is_provided(self):
        key = "AIRFLOW__CORE__FERNET_KEY"
        value = "some value"
        with mock.patch.dict("os.environ", {key: value}):
            fernet_key = conf.get("core", "FERNET_KEY")
        assert value == fernet_key
    def test_config_override_original_when_empty_envvar_is_provided(self):
        key = "AIRFLOW__CORE__FERNET_KEY"
        value = "some value"
        with mock.patch.dict("os.environ", {key: value}):
            fernet_key = conf.get("core", "FERNET_KEY")
        assert value == fernet_key
    @mock.patch.dict("os.environ", {"AIRFLOW__CORE__DAGS_FOLDER": "/tmp/test_folder"})
    def test_write_should_respect_env_variable(self):