### Apache Airflow Provider(s)

google

### Versions of Apache Airflow Providers

google=8.5.0

### Apache Airflow version

2.4.3

### Operating System

Debian GNU/Linux 11 (bullseye)

### Deployment

Other Docker-based deployment

### Deployment details

_No response_

### What happened

The newest version of the google providers no longer provides the `field_delimiter` or `time_partitioning` fields to the bq job configuration for the GCStoBQ transfers. Looking at the code it seems like this behavior was removed during the change to use deferrable operations

### What you think should happen instead

These fields should continue to be provided

### How to reproduce

_No response_

### Anything else

_No response_

### Are you willing to submit 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)

hook.return_value.insert_job.side_effect = [
            MagicMock(job_id=pytest.real_job_id, error_result=False),
            pytest.real_job_id,
        ]
        hook.return_value.generate_job_id.return_value = pytest.real_job_id
        hook.return_value.split_tablename.return_value = (PROJECT_ID, DATASET, TABLE)
        operator = GCSToBigQueryOperator(
            task_id=TASK_ID,
            bucket=TEST_BUCKET,
            source_objects=TEST_SOURCE_OBJECTS,
            schema_fields=SCHEMA_FIELDS,
            write_disposition=WRITE_DISPOSITION,
            destination_project_dataset_table=TEST_EXPLICIT_DEST,
            external_table=True,