### 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.
with 
            aws_client.s3.delete_s(
                Bucket="non-existent-bucket",
                Delete={"Objects": [{"Key": "dummy1"}, {"Key": "dummy2"}]},
            )
        assert "NoSuchBucket" == e.value.response["Error"]["Code"]
        snapshot.match("error-non-existent-bucket", e.value.response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        paths=[
            "$..ServerSideEncryption",
            "$..Deleted..DeleteMarker",  # TODO
            "$..Deleted..DeleteMarkerVersionId",
        ]
    )
    @pytest.mark.skip_snapshot_verify(condition=is_old_provider, paths=["$..VersionId"])
    def test_put__acl_on_delete_marker(self, s3_bucket, snapshot, aws_client):