### Description

Support mounting to multiple namespaces with the Hashicorp Vault Secrets Back-end

### Use case/motivation

As a data engineer I wish to utilize secrets stored in multiple mount paths (to support connecting to multiple namespaces)  without having to mount to a higher up namespace.

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] 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)

"""
        Get connection from Vault as secret. Prioritize conn_uri if exists,
        if not fall back to normal Connection creation.
        :return: A Connection object constructed from Vault data
        """
        
        
        from airflow.models.connection import Connection
        response = self.get_response(conn_id)
        if response is None:
            return None
        uri = response.get("conn_uri")
        if uri:
            return Connection(conn_id, uri=uri)
        return Connection(conn_id, **response)
    def get_variable(self, key: str) -> str | None: