### 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())
        snapshot.add_transformer(snapshot.transform.key_value("Key"))
        delete_ = []
        for _ in range(5):
            key_name = f"key-batch-delete-{short_uid()}"
            aws_client.s3.put_(Bucket=s3_bucket, Key=key_name, Body="This body document")
            delete_.append({"Key": key_name})
        response = aws_client.s3.delete_s(Bucket=s3_bucket, Delete={"Objects": delete_})
        snapshot.match("batch-delete", response)
        response = aws_client.s3.list_s(Bucket=s3_bucket)
        snapshot.match("list-remaining-s", response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(condition=is_old_provider, paths=["$..VersionId"])
    def test_s3_get__header_overrides(self, s3_bucket, snapshot, aws_client):