### 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.
CreateMultipartUploadRequest,
    Delete,
    DeleteObjectOutput,
    DeleteObjectRequest,
    DeleteObjectsOutput,
    DeleteObjectTaggingOutput,
    DeleteObjectTaggingRequest,
    ETag,
    GetBucketAclOutput,
    GetBucketAnalyticsConfigurationOutput,
    GetBucketCorsOutput,
    GetBucketIntelligentTieringConfigurationOutput,
    GetBucketLifecycleConfigurationOutput,
    GetBucketLifecycleOutput,
    GetBucketLocationOutput,
    GetBucketReplicationOutput,
    GetBucketRequestPaymentOutput,
    GetBucketRequestPaymentRequest,
    GetBucketWebsiteOutput,
    GetObjectAclOutput,
    GetObjectAttributesOutput,
    GetObjectAttributesParts,
    GetObjectAttributesRequest,
    GetObjectOutput,
    GetObjectRequest,
    GetObjectTaggingOutput,
    GetObjectTaggingRequest,
    HeadObjectOutput,
    HeadObjectRequest,
    IntelligentTieringConfiguration,