### 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)

}
                    ],
                    "nodeSelector": {"diskType": "ssd"},
                },
            },
            show_only=["templates/pod-template-file.yaml"],
            chart_dir=self.temp_chart_dir,
        )
        assert "Pod" == jmespath.search("kind", docs[0])
        assert "foo" == jmespath.search(
            "spec.affinity.nodeAffinity."
            "requiredDuringSchedulingIgnoredDuringExecution."
            "nodeSelectorTerms[0]."
            "matchExpressions[0]."
            "key",
            docs[0],
        )
        assert "ssd" == jmespath.search(
            "spec.nodeSelector.diskType",
            docs[0],
        )
        assert "dynamic-pods" == jmespath.search(
            "spec.tolerations[0].key",
            docs[0],
        )
        assert "foo" == jmespath.search(
            "spec.topologySpreadConstraints[0].topologyKey",
            docs[0],
        )
    def test_affinity_tolerations_topology_spread_constraints_and_node_selector_precedence(self):