### Body

The hook uses `_headers`:

https://github.com/apache/airflow/blob/9276310a43d17a9e9e38c2cb83686a15656896b2/airflow/providers/http/hooks/http.py#L340-L341

but passes `headers` to the async function

https://github.com/apache/airflow/blob/9276310a43d17a9e9e38c2cb83686a15656896b2/airflow/providers/http/hooks/http.py#L368-L375

The task:

`headers=headers` needs to be `headers=_headers`

https://github.com/apache/airflow/blob/9276310a43d17a9e9e38c2cb83686a15656896b2/airflow/providers/http/hooks/http.py#L372

There was attempt to address it in https://github.com/apache/airflow/pull/31010 but the PR become stale as no response from the author.

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
conn = Connection(conn_id="http_default", conn_type="http", host="localhost", schema="https")
        mock_get_connection.return_value = conn
        hook = HttpHook()
        hook.get_conn({})
        assert hook.base_url == "https://localhost"
    @mock.patch("airflow.providers.http.hooks.http.HttpHook.get_connection")
    def test_host_encoded_http_connection(self, mock_get_connection):
        conn = Connection(conn_id="http_default", conn_type="http", host="http://localhost")
        mock_get_connection.return_value = conn
        hook = HttpHook()
        hook.get_conn({})
        assert hook.base_url == "http://localhost"
    @mock.patch("airflow.providers.http.hooks.http.HttpHook.get_connection")
    def test_host_encoded_https_connection(self, mock_get_connection):
        conn = Connection(conn_id="http_default", conn_type="http", host="https://localhost")
        mock_get_connection.return_value = conn
        hook = HttpHook()
        hook.get_conn({})
        assert hook.base_url == "https://localhost"
    def test_method_converted_to_uppercase_when_created_in_lowercase(self):
        assert self.get_lowercase_hook.method == "GET"
    @mock.patch("airflow.providers.http.hooks.http.HttpHook.get_connection")
    def test_connection_without_host(self, mock_get_connection):
        conn = Connection(conn_id="http_default", conn_type="http")
        mock_get_connection.return_value = conn
        hook = HttpHook()
        hook.get_conn({})
        assert hook.base_url == "http://"
    @pytest.mark.parametrize("method", ["GET", "POST"])
    def test_json_request(self, method, requests_mock):