### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The Complete Multipart Upload operation generates the **InternalError** error for non-existing uploads.

### Expected Behavior

The Complete Multipart Upload operation generates the **NoSuchUpload** error for non-existing uploads.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

    docker run -it --rm -p 4566:4566 localstack/localstack

    aws s3api create-bucket --bucket test --endpoint-url http://localhost:4566 --create-bucket-configuration LocationConstraint=us-west-2

    aws s3api complete-multipart-upload --bucket test --endpoint-url http://localhost:4566 --key test --upload-id test

### Environment

```markdown
- OS: Windows 11
- LocalStack: latest
```


### Anything else?

The Abort Multipart Upload operation works correctly in LocalStack.

The official documentation: https://docs.aws.amazon.com/AmazonS3/latest/API/API_CompleteMultipartUpload.html
Amazon S3 throws the correct **NoSuchUpload** error for both Abort and Complete operations.
DaysAfterInitiation = int
DeleteMarker = bool
DeleteMarkerVersionId = str
Delimiter = str
Description = str
DisplayName = str
ETag = str
EmailAddress = str
EnableRequestProgress = bool
ErrorCode = str
ErrorMessage = str
Expiration = str
ExpiredObjectDeleteMarker = bool
ExposeHeader = str
Expression = str
FetchOwner = bool
FieldDelimiter = str
FilterRuleValue = str
GetObjectResponseStatusCode = int
GrantFullControl = str
GrantRead = str
GrantReadACP = str
GrantWrite = str
GrantWriteACP = str
HostName = str
HttpErrorCodeReturnedEquals = str
HttpRedirectCode = str
ID = str
IfMatch = str
IfNoneMatch = str