### 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_
elif canned_acl and present_headers:
            raise InvalidRequest("Specifying both Canned ACLs and Header Grants is not allowed")
        elif (canned_acl or present_headers) and is_acp_in_body:
            raise UnexpectedContent("This request does not support content")
        if canned_acl:
            validate_canned_acl(canned_acl)
        elif present_headers:
            for key, grantees_values in present_headers:
                validate_grantee_in_headers(key, grantees_values)
        elif acp := request.get("AccessControlPolicy"):
            validate_acl_acp(acp)
        call_moto(context)
    def get_object_acl(
        self,
        context: RequestContext,
        bucket: BucketName,
        key: ObjectKey,
        version_id: ObjectVersionId = None,
        request_payer: RequestPayer = None,
        expected_bucket_owner: AccountId = None,
    ) -> GetObjectAclOutput:
        response: GetObjectAclOutput = call_moto(context)
        for grant in response["Grants"]:
            grantee = grant.get("Grantee", {})
            if grantee.get("ID") == MOTO_CANONICAL_USER_ID:
                
                grantee["DisplayName"] = "webfile"
        return response
    @handler("PutObjectAcl", expand=False)
    def put_object_acl(