Incorrectly parsing Knative Service YAML in 1.4.0

[0x5457]

Describe the bug
When using the loadYaml method to parse a Knative Service YAML, version 1.4.0 incorrectly handles the parsing and loses the spec content. This appears to be a regression as it works correctly in version 1.3.0.

Client Version
e.g. 1.4.0

Server Version
e.g. N/A

To Reproduce
Steps to reproduce the behavior:

const k8s = require('@kubernetes/client-node');

const x = k8s.loadYaml(`apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: hello-world
spec:
  template:
    spec:
      containers:
        - image: ghcr.io/knative/helloworld-go:latest
          ports:
            - containerPort: 8080
          env:
            - name: TARGET
              value: "World"`);
console.log(JSON.stringify(x, null, 2));

Actual Behavior (1.4.0)

{
  "apiVersion": "serving.knative.dev/v1",
  "kind": "Service",
  "metadata": {
    "name": "hello-world"
  },
  "spec": {}
}

Expected behavior (1.3.0)
The parsed object maintains the complete structure including all spec content:

{
  "apiVersion": "serving.knative.dev/v1",
  "kind": "Service",
  "metadata": {
    "name": "hello-world"
  },
  "spec": {
    "template": {
      "spec": {
        "containers": [
          {
            "image": "ghcr.io/knative/helloworld-go:latest",
            "ports": [
              {
                "containerPort": 8080
              }
            ],
            "env": [
              {
                "name": "TARGET",
                "value": "World"
              }
            ]
          }
        ]
      }
    }
  }
}

---

It appears that the parser might be incorrectly treating the Knative Service as a native Kubernetes Service, causing it to lose the Knative-specific spec configuration.

[brendandburns]

Yeah, this is caused by this here:
https://github.com/kubernetes-client/javascript/blob/main/src/util.ts#L168

In general, parsing to non-built in objects isn't really well supported, we should augment the loadYaml function so that it considers the API group.

[0x5457]

The issue affects not only loadYaml/loadAllYaml but also KubernetesObjectApi.read()

Additional Test Case

const k8s = require('@kubernetes/client-node');

const kc = new k8s.KubeConfig();
kc.loadFromDefault();

const client = k8s.KubernetesObjectApi.makeApiClient(kc);
const knative = {
  apiVersion: 'serving.knative.dev/v1',
  kind: 'Service',
  metadata: {
    name: 'hello-world',
  },
};

client.read(knative).then((obj) => {
  console.log(JSON.stringify(obj.spec)); // ==> {}
});