[BUG] invalid message key

[ShuKe-code]

Expected behavior

The requirement is to retrieve the ID of the next message to be consumed for a given subscriber.
admin.Subscriptions().PeekMessages(topicName,subscription,1)
get 1 message from pulsar broker

Tell us what should happen

Actual behavior

net/http: HTTP/1.x transport connection broken: malformed MIME header line: X-Pulsar-Partition-Key
Tell us what happens instead

Steps to reproduce

How can we reproduce the issue
Tests conducted using the master branch of the pulsar-client-go repository revealed the following error when using PeekMessages to retrieve messages: "net/http: HTTP/1.x transport connection broken: malformed MIME header line: X-Pulsar-Partition-Key: L". This is because in Go versions 1.20 and above, the client directly classifies HTTP Response Headers as malformed during the MIME Header parsing phase.

step 1. create subscription

step 2. send message

 func main() {
	client, err := pulsar.NewClient(pulsar.ClientOptions{URL: "pulsar://xxxx:6650"})
	if err != nil {
		log.Fatal(err)
	}

	defer client.Close()

	producer, err := client.CreateProducer(pulsar.ProducerOptions{
		Topic: "public/xx/xxxx",
	})
	if err != nil {
		log.Fatal(err)
	}

	defer producer.Close()

	ctx := context.Background()
	for i := 0; i < 1; i++ {
		_, err := producer.Send(ctx, &pulsar.ProducerMessage{
			Key: "\u0000\u0000\u0000\u0000\u001d¥L\u0000\u0000\u0000\u0000\u0000\u0006��",
			Properties: map[string]string{
				"X-Test":    "\u0000\u0000\u0000\u0000\u001d¥L\u0000\u0000\u0000\u0000\u0000\u0006��",
				"X-Newline": "abc\n123",
				"X-Binary":  string([]byte{0xff, 0xfe, 0xfd}),
			},
			Payload: []byte(fmt.Sprintf("hello-%d", i)),
		})

		if err != nil {
			log.Fatal(err)
		}
	}
}

step 3. peek message

func main() {
	admin, err := admin.New(&config.Config{
		WebServiceURL: "http://xxxx:8080",
	})
	if err != nil {
		panic(err)
	}
	name, err := utils.GetTopicName("public/xxx/xxxx-partition-x")
	if err != nil {
		panic(err)
	}
	msgs, err := admin.Subscriptions().PeekMessages(*name, "xxxxx", 1)
	if err != nil {
		panic(err)
	}
	fmt.Println(msgs)
}

invalid key ：\u0000\u0000\u0000\u0000\u001d¥L\u0000\u0000\u0000\u0000\u0000\u0006��

System configuration

Pulsar version: 3.0.11
pulsar-client-go:master