### 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)

"containerName": "git-sync-test",
                        "sshKeySecret": "ssh-secret",
                        "knownHosts": None,
                        "branch": "test-branch",
                    }
                }
            },
            show_only=["templates/pod-template-file.yaml"],
            chart_dir=self.temp_chart_dir,
        )
        assert {"name": "GIT_SSH_KEY_FILE", "value": "/etc/git-secret/ssh"} in jmespath.search(
            "spec.initContainers[0].env", docs[0]
        )
        assert {"name": "GIT_SYNC_SSH", "value": "true"} in jmespath.search(
            "spec.initContainers[0].env", docs[0]
        )
        assert {"name": "GIT_KNOWN_HOSTS", "value": "false"} in jmespath.search(
            "spec.initContainers[0].env", docs[0]
        )
        assert {
            "name": "git-sync-ssh-key",
            "mountPath": "/etc/git-secret/ssh",
            "subPath": "gitSshKey",
            "readOnly": True,
        } in jmespath.search("spec.initContainers[0].volumeMounts", docs[0])
        assert {
            "name": "git-sync-ssh-key",
            "secret": {"secretName": "ssh-secret", "defaultMode": 288},
        } in jmespath.search("spec.volumes", docs[0])
    def test_validate_if_ssh_known_hosts_are_added(self):