### 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())
        keys = ["test/foo/bar/123" "test/foo/bar/456", "test/bar/foo/123"]
        for key in keys:
            aws_client.s3.put_(Bucket=s3_bucket, Key=key, Body=b"content 123")
        response = aws_client.s3.list_s_v2(
            Bucket=s3_bucket, Prefix="test/", EncodingType="url"
        )
        snapshot.match("list-s-v2-1", response)
        response = aws_client.s3.list_s_v2(
            Bucket=s3_bucket, Prefix="test/foo", EncodingType="url"
        )
        snapshot.match("list-s-v2-2", response)
        response = aws_client.s3.list_s_v2(
            Bucket=s3_bucket, Prefix="test/foo/bar", EncodingType="url"
        )
        snapshot.match("list-s-v2-3", response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(condition=is_old_provider, path="$..Error.BucketName")
    def test_get__no_such_bucket(self, snapshot, aws_client):