fix issue(#52994)kubectl set resource can not update multi resource in local

test/fixtures/pkg/kubectl/cmd/set/multi-resource-yaml.yaml

@@ -0,0 +1,33 @@
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: first-rc
+spec:
+  replicas: 1
+  selector:
+    app: mock
+  template:
+    metadata:
+      labels:
+        app: mock
+    spec:
+      containers:
+      - name: mock-container
+        image: gcr.io/google-containers/pause:2.0
+---
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: second-rc
+spec:
+  replicas: 1
+  selector:
+    app: mock
+  template:
+    metadata:
+      labels:
+        app: mock
+    spec:
+      containers:
+      - name: mock-container
+        image: gcr.io/google-containers/pause:2.0