### Apache Airflow version

2.6.0

### What happened

Worker pod template file doesn't have an option to add priorityClassName. 

### What you think should happen instead

Airflow workers deployment however has the option to add it via the override airflow.workers.priorityClassName . We should reuse this for the worker pod template file too.

### How to reproduce

Trying to add a priorityClassName for airflow worker pod doesnt work. Unless we override the whole worker pod template with our own. But that is not preferrable as we will need to duplicate a lot of the existing template file. 

### Operating System

Rhel8

### Versions of Apache Airflow Providers

_No response_

### Deployment

Official Apache Airflow Helm Chart

### Deployment details

_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)

docs = render_chart(
            values={"dags": {"persistence": {"enabled": True, "existingClaim": "test-claim"}}},
            show_only=["templates/pod-template-file.yaml"],
            chart_dir=self.temp_chart_dir,
        )
        assert {"name": "dags", "persistentVolumeClaim": {"claimName": "test-claim"}} in jmespath.search(
            "spec.volumes", docs[0]
        )
    def test_should_use_empty_dir_for_gitsync_without_persistence(self):
        docs = render_chart(
            values={"dags": {"gitSync": {"enabled": True}}},
            show_only=["templates/pod-template-file.yaml"],
            chart_dir=self.temp_chart_dir,
        )
        assert {"name": "dags", "emptyDir": {}} in jmespath.search("spec.volumes", docs[0])
    @pytest.mark.parametrize(
        "log_persistence_values, expected",
        [
            ({"enabled": False}, {"emptyDir": {}}),
            ({"enabled": True}, {"persistentVolumeClaim": {"claimName": "release-name-logs"}}),
            (
                {"enabled": True, "existingClaim": "test-claim"},
                {"persistentVolumeClaim": {"claimName": "test-claim"}},
            ),
        ],
    )
    def test_logs_persistence_changes_volume(self, log_persistence_values, expected):