### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Sending a message with body:
`"&quot;&quot;"`
is received on the consumer side with body:
`""""`

### Expected Behavior

Sending a message with body:
"&quot;&quot;"
is received on the consumer side with body:
"&quot;&quot;"

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

Running localstack in docker desktop on Mac using helm chart

https://localstack.github.io/helm-charts
version 0.3.7
Image version: 0.14.3

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)



### Environment

```markdown
- OS: macOS Monterey
- LocalStack: 0.14.3
```


### Anything else?

_No response_
aws_client.sqs.send_message(QueueUrl=sqs_queue, MessageBody="foobar", DelaySeconds=1)
        result = aws_client.sqs.receive_message(QueueUrl=sqs_queue)
        assert "Messages" not in result
        result = aws_client.sqs.receive_message(QueueUrl=sqs_queue, WaitTimeSeconds=2)
        assert "Messages" in result
        assert len(result["Messages"]) == 1
    @pytest.mark.only_localstack
    def test_approximate_number_of_messages_delayed(self, sqs_queue, aws_client):
        
        
        aws_client.sqs.send_message(QueueUrl=sqs_queue, MessageBody="ed")
        aws_client.sqs.send_message(QueueUrl=sqs_queue, MessageBody="foo", DelaySeconds=2)
        aws_client.sqs.send_message(QueueUrl=sqs_queue, MessageBody="bar", DelaySeconds=2)
        result = aws_client.sqs.get_queue_attributes(
            QueueUrl=sqs_queue,
            AttributeNames=[
                "ApproximateNumberOfMessages",
                "ApproximateNumberOfMessagesNotVisible",
                "ApproximateNumberOfMessagesDelayed",
            ],
        )
        assert result["Attributes"] == {
            "ApproximateNumberOfMessages": "1",
            "ApproximateNumberOfMessagesNotVisible": "0",
            "ApproximateNumberOfMessagesDelayed": "2",
        }
        def _assert():