### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The provided example does not put a message in SQS.

### Expected Behavior

The provided example puts a message in SQS.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

The following scripts returns no items in SQS, but it should. The bit detail: foo is not matched.

```
awslocal events create-event-bus \
    --name detail-bus-1

awslocal sqs create-queue \
    --queue-name "detail-sqs-1"

awslocal events put-rule \
    --name "detail-rule-1" \
    --event-bus-name "detail-bus-1" \
    --event-pattern '{ "detail": { "foo": [ { "exists": true } ] } }'

awslocal events put-targets \
    --rule "detail-rule-1" \
    --event-bus-name "detail-bus-1" \
    --targets "Id"="detail-target-rule-1","Arn"="arn:aws:sqs:us-east-1:000000000000:detail-sqs-1","InputPath"="$.detail"

awslocal events put-events --entries '[{"DetailType": "test", "Source": "aws.test", "Detail": "{ \"foo\": \"bar\" }", "EventBusName": "detail-bus-1"}]'
awslocal sqs receive-message --queue-url http://localhost:4566/000000000000/detail-sqs-1
```

### Environment

```markdown
- OS: macOS 13.3.1
- LocalStack: 1.4.0
```


### Anything else?

_No response_
element_value[index] == ">="
                            and isinstance(element_value[index + 1], int)
                            and event_value < element_value[index + 1]
                        ):
                            break
                        elif (
                            element_value[index] == "<"
                            and isinstance(element_value[index + 1], int)
                            and event_value >= element_value[index + 1]
                        ):
                            break
                        elif (
                            element_value[index] == "<="
                            and isinstance(element_value[index + 1], int)
                            and event_value > element_value[index + 1]
                        ):
                            break
                    else:
                        return True
            elif element_key.lower() == "anything-but":
                if isinstance(element_value, list) and event_value not in element_value:
                    return True
                elif (isinstance(element_value, (str, int))) and event_value != element_value:
                    return True
                elif isinstance(element_value, dict):
                    nested_key = list(element_value)[0]
                    if nested_key == "prefix" and not re.match(
                        r"^{}".format(element_value.get(nested_key)), event_value
                    ):
                        return True