### Description

Introducing a startupProbe onto the airflow services would be useful for slow starting container and most of all it doesn't have side effects.

### Use case/motivation

We have an internal feature where we perform a copy of venv from airflow services to cloud storages which can sometimes take a few minutes. Copying of a venv is a metadata heavy load: https://learn.microsoft.com/en-us/troubleshoot/azure/azure-storage/files-troubleshoot-performance?tabs=linux#cause-2-metadata-or-namespace-heavy-workload.

Introducing a startupProbe onto the airflow services would be useful for slow starting container and most of all it doesn't have side effects.

### Related issues

_No response_

### Are you willing to submit a 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)

([{"port": "sidecar"}], [{"port": "sidecar"}]),
            (
                [
                    {"port": "{{ .Values.ports.airflowUI }}"},
                    {"port": 80},
                ],
                [
                    {"port": 8080},
                    {"port": 80},
                ],
            ),
        ],
    )
    def test_ports_overrides(self, ports, expected_ports):
        docs = render_chart(
            values={
                "networkPolicies": {"enabled": True},
                "webserver": {
                    "networkPolicy": {
                        "ingress": {
                            "from": [{"namespaceSelector": {"matchLabels": {"release": "myrelease"}}}],
                            "ports": ports,
                        }
                    }
                },
            },
            show_only=["templates/webserver/webserver-networkpolicy.yaml"],
        )
        assert expected_ports == jmespath.search("spec.ingress[0].ports", docs[0])
    def test_deprecated_from_param(self):