feat: set appProtocol based on target service

[Yapcheekian]

Why are these changes needed?

https://github.com/ray-project/kuberay/pull/668 always set app protocol to tcp. This change dynamically adjusts the port protocol based on the target service.

Related issue number

https://github.com/ray-project/kuberay/issues/1946

Checks

• [ ] I've made sure the tests are passing.
• Testing Strategy
  • [ ] Unit tests
  • [ ] Manual tests
  • [ ] This PR is not tested :(

[Yapcheekian]

@rueian