### 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)

"credentialsSecret": None,
                        "knownHosts": None,
                    }
                },
            },
            show_only=["templates/pod-template-file.yaml"],
            chart_dir=self.temp_chart_dir,
        )
        assert re.search("Pod", docs[0]["kind"])
        assert {
            "name": "git-sync-test-init",
            "securityContext": {"runAsUser": 65533},
            "image": "test-registry/test-repo:test-tag",
            "imagePullPolicy": "Always",
            "env": [
                {"name": "GIT_SYNC_REV", "value": "HEAD"},
                {"name": "GIT_SYNC_BRANCH", "value": "test-branch"},
                {"name": "GIT_SYNC_REPO", "value": "https://github.com/apache/airflow.git"},
                {"name": "GIT_SYNC_DEPTH", "value": "1"},
                {"name": "GIT_SYNC_ROOT", "value": "/git"},
                {"name": "GIT_SYNC_DEST", "value": "repo"},
                {"name": "GIT_SYNC_ADD_USER", "value": "true"},
                {"name": "GIT_SYNC_WAIT", "value": "66"},
                {"name": "GIT_SYNC_MAX_SYNC_FAILURES", "value": "70"},
                {"name": "GIT_SYNC_ONE_TIME", "value": "true"},
            ],
            "volumeMounts": [{"mountPath": "/git", "name": "dags"}],
            "resources": {},
        } == jmespath.search("spec.initContainers[0]", docs[0])
    def test_should_not_add_init_container_if_dag_persistence_is_true(self):