### 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)

from airflow.models.base import Base
    from airflow.settings import AIRFLOW_MOVED_TABLE_PREFIX
    tables = set(inspect(connection).get_table_names())
    to_delete = [Table(x, Base.metadata) for x in tables if x.startswith(AIRFLOW_MOVED_TABLE_PREFIX)]
    for tbl in to_delete:
        tbl.drop(settings.engine, checkfirst=False)
        Base.metadata.remove(tbl)
@provide_session
def check(session: Session = NEW_SESSION):
    """
    Check if the database works.
    :param session: session of the sqlalchemy
    """
    session.execute(text("select 1 as is_alive;"))
    log.info("Connection successful.")
@enum.unique
class DBLocks(enum.IntEnum):
    """
    Cross-db Identifiers for advisory global database locks.
    Postgres uses int64 lock ids so we use the integer value, MySQL uses names, so we
    call ``str()`, which is implemented using the ``_name_`` field.
    """
    MIGRATIONS = enum.auto()
    SCHEDULER_CRITICAL_SECTION = enum.auto()
    def __str__(self):
        return f"airflow_{self._name_}"
@contextlib.contextmanager
def create_global_lock(