Did you ever find a solution, I tried many different methods including:

uri = (
                f"databricks://token:{api_token}@{host}?"
                f"http_path={http_path}&catalog={catalog}&schema={schema}"
            )
            
            
            db = SQLDatabase.from_uri(
                database_uri=uri,
                include_tables=[""],
                sample_rows_in_table_info=5,
            )

but that does not seem to work either