### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

I created an SQS FIFO queue with content based deduplication and sent a message that contains the same messageBody and attributes twice.

The message gets sent and received by the queue twice.

Im using the latest version of localstack with docker-compose.


### Expected Behavior

When ContetBasedDeduplication is set to true a message with the same body should only be recieved once by the queue during the 5 minute deduplication interval.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

create queue
```
sqs_client.create_queue(
            QueueName='my_queue.fifo',
            Attributes={
                'FifoQueue': 'true',
                'ContentBasedDeduplication': 'true'
            },
        )
```

send message
```
item = {'hello': 'hola'}
sqs_client.send_message(
            QueueUrl='my_queue.fifo',
            MessageBody=json.dumps(item),
            MessageAttributes= {'hello': {'StringValue': 'hola', 'DataType': 'String'}},
            MessageGroupId='group-1'
        )
```





### Environment

```markdown
- OS:Ubuntu 20.04
- LocalStack: latest
```


### Anything else?

_No response_
f'with "String", "Binary", or "Number", but was: {attribute_type}'
            )
        if len(attribute_type) >= 256:
            raise InvalidParameterValue(
                "Message (user) attribute types must be shorter than 256 Bytes"
            )
        if attribute_type == "String":
            try:
                attribute_value = attribute.get("StringValue")
                if not attribute_value:
                    raise InvalidParameterValue(
                        f"Message (user) attribute '{attribute_name}' must contain a non-empty value of type 'String'."
                    )
                check_message_content(attribute_value)
            except InvalidMessageContents as e:
                
                raise InvalidParameterValue(e.args[0])
def check_fifo_id(fifo_id):
    if not fifo_id:
        return
    if len(fifo_id) >= 128:
        raise InvalidParameterValue(
            "Message deduplication ID and group ID must be shorter than 128 bytes"
        )
    if not re.match(FIFO_MSG_REGEX, fifo_id):
        raise InvalidParameterValue(
            "Invalid characters found. Deduplication ID and group ID can only contain"
            "alphanumeric characters as well as TODO"
        )
class SqsBackend(RegionBackend):