### Description

The current length limit for the `login` parameter in an HTTP connection is 500 characters. It'd be nice if this was 5000 characters like the `password` parameter.

### Use case/motivation

We've run into an issue with an API we need to integrate with. It uses basic HTTP authentication, and both username and password are about 900 characters long each. We don't have any control over this API, so we cannot change the authentication method, nor the length of these usernames and passwords.

### Related issues

_No response_

### Are you willing to submit a 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)

"""Calls out get_hook method and executes test_connection method on that."""
        status, message = False, ""
        try:
            hook = self.get_hook()
            if getattr(hook, "test_connection", False):
                status, message = hook.test_connection()
            else:
                message = (
                    f"Hook {hook.__class__.__name__} doesn't implement or inherit test_connection method"
                )
        except Exception as e:
            message = str(e)
        return status, message
    @property
    def extra_dejson(self) -> dict:
        """Returns the extra property by deserializing json."""
        obj = {}
        if self.extra:
            try:
                obj = json.loads(self.extra)
            except JSONDecodeError:
                self.log.exception("Failed parsing the json for conn_id %s", self.conn_id)
            
            mask_secret(obj)
        return obj
    @classmethod
    def get_connection_from_secrets(cls, conn_id: str) -> Connection: