**What happened**:

With the new Backport providers, when calling `DataflowCreatePythonJobOperator` with an empty `py_rerquirments` Dataflow commands always launch inside a virtualenv.

**What you expected to happen**:

The Dataflow command should run locally.


airflow/providers/google/cloud/hooks/dataflow.py
"""
        Extracts job_id.
        :param line: URL from which job_id has to be extracted
        :type line: str
        """
        
        matched_job = JOB_ID_PATTERN.search(line)
        if matched_job:
            job_id = matched_job.group('job_id_java') or matched_job.group('job_id_python')
            self.log.info("Found Job ID: %s", job_id)
            self.job_id = job_id
            if self.on_new_job_id_callback:
                self.on_new_job_id_callback(job_id)
    def wait_for_done(self) -> Optional[str]: