### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When requesting a  Complete operation at the end of a multi part upload, the parts have to be sorted in ascending order of part number.
AWS S3 issues an error if it is not the case. localstack does not generate such error (although, its log issues warnings)/

### Expected Behavior

Complete should generate an error

### How are you starting LocalStack?

With the `localstack` script

### Steps To Reproduce

localstack start

Buggy software extract (simplified)
```golang
	wg := errgroup.Group{}
	for i := 0; i < 3; i++ {
		wg.Go(func() error {
			rd, err := os.Open(source)
			if err != nil {
				return err
			}
			return u.Upload(rd, i, 10*_cMB)  // uploads and stores for part i
		})
	}
	err :=  wg.Wait()
if err != nil {
...
}
err = u.Complete()
// as using i inside the routines, all the four parts will have the same value 3
```

### Environment

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


### Anything else?

_No response_
TransformerUtility.key_value("RequestId", reference_replacement=False),
]
S3_ASSUME_ROLE_POLICY = {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {"Service": "s3.amazonaws.com"},
            "Action": "sts:AssumeRole",
        }
    ],
}
S3_POLICY = {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:*",
            ],
            "Resource": "*",
        }
    ],
}
def is_old_provider():
    return LEGACY_S3_PROVIDER
def is_asf_provider():
    return not LEGACY_S3_PROVIDER
@pytest.fixture(scope="function")
def patch_s3_skip_signature_validation_false(monkeypatch):