[Bug] Function worker properties `functionInstanceMinResources` and `functionInstanceMaxResources` not honored

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Version

Pulsar 2.8.4

### Minimal reproduce step

Set following broker environment variables:
```
PF_functionInstanceMaxResources_cpu: "16"
PF_functionInstanceMaxResources_disk: "1073741824"
PF_functionInstanceMaxResources_ram: "17179869184"
PF_functionInstanceMinResources_cpu: "0.256"
PF_functionInstanceMinResources_disk: "1073741824"
PF_functionInstanceMinResources_ram: "536870912"
```
Instantiate a sink without establishing any "resources" in SinkConfig DTO in a K8s environment.

### What did you expect to see?

A pod that executes the sink (pf-xxx) with following resource parameters set for container:
```
Limits:
cpu: 16
memory: 17179869184
Requests:
cpu: 0.256
memory: 1073741824
```

### What did you see instead?

A pod with following parameters set:

```
Limits:
cpu: 1
memory: 1073741824
Requests:
cpu: 1
memory: 1073741824
```

### Anything else?

_No response_

### Are you willing to submit a PR?

- [X] I'm willing to submit a PR!