### 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.
ArgumentName = str
ArgumentValue = str
AWSAccessKeyId = str
HostId = str
HeadersNotSigned = str
SignatureProvided = str
StringToSign = str
StringToSignBytes = str
CanonicalRequest = str
CanonicalRequestBytes = str
X_Amz_Expires = int
HttpMethod = str
ResourceType = str
MissingHeaderName = str
Method = str
class AnalyticsS3ExportFileFormat(str):
    CSV = "CSV"
class ArchiveStatus(str):
    ARCHIVE_ACCESS = "ARCHIVE_ACCESS"
    DEEP_ARCHIVE_ACCESS = "DEEP_ARCHIVE_ACCESS"
class BucketAccelerateStatus(str):
    Enabled = "Enabled"
    Suspended = "Suspended"
class BucketCannedACL(str):
    private = "private"
    public_read = "public-read"
    public_read_write = "public-read-write"
    authenticated_read = "authenticated-read"
    log_delivery_write = "log-delivery-write"
class BucketLocationConstraint(str):