### 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.
snapshot.add_transformer(snapshot.transform.s3_api())
        bucket_name = s3_bucket
        for i in range(0, 10, 1):
            body = "test-" + str(i)
            key = "test-key-" + str(i)
            aws_client.s3.put_(Bucket=bucket_name, Key=key, Body=body)
        resp = aws_client.s3.list_s(Bucket=bucket_name, MaxKeys=100)
        snapshot.match("list-s", resp)
        assert 10 == len(resp["Contents"])
        bucket = s3_resource.Bucket(bucket_name)
        bucket.s.all().delete()
        bucket.delete()
        resp = aws_client.s3.list_buckets()
        
        snapshot.match("list-buckets", resp)
        assert bucket_name not in [b["Name"] for b in resp["Buckets"]]
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider, paths=["$..VersionId", "$..ContentLanguage"]
    )
    def test_put_and_get__with_utf8_key(self, s3_bucket, snapshot, aws_client):