**Description**

This operator should cancel running workflow template `on_kill`. This option probably should be configurable because of request_id prameter in a job definition: https://googleapis.dev/python/dataproc/latest/gapic/v1/api.html#google.cloud.dataproc_v1.WorkflowTemplateServiceClient.instantiate_inline_workflow_template
https://googleapis.dev/python/dataproc/latest/gapic/v1/api.html#google.cloud.dataproc_v1.WorkflowTemplateServiceClient.instantiate_workflow_template

Note this will have to cancle the Google Long Running Operation for the workflow template (which will in turn cancel all children jobs and clean up relevant cluster).

**Use case / motivation**

Remove dangling workflow templates

**Related Issues**
#10381
#6371
if self.job_template:
            job = self.job_template.build()
            return job["job"]
        raise Exception("Create a job template before")
    def execute(self, context: Context):
        if self.job_template:
            self.job = self.job_template.build()
            if self.job is None:
                raise Exception("The job should be set here.")
            self.dataproc_job_id = self.job["job"]["reference"]["job_id"]
            self.log.info("Submitting %s job %s", self.job_type, self.dataproc_job_id)
            job_object = self.hook.submit_job(
                project_id=self.project_id, job=self.job["job"], region=self.region
            )
            job_id = job_object.reference.job_id
            self.log.info("Job %s submitted successfully.", job_id)
            
            DataprocLink.persist(
                context=context, task_instance=self, url=DATAPROC_JOB_LINK_DEPRECATED, resource=job_id
            )
            if self.deferrable:
                self.defer(
                    trigger=DataprocSubmitTrigger(
                        job_id=job_id,
                        project_id=self.project_id,
                        region=self.region,
                        gcp_conn_id=self.gcp_conn_id,