`hdbscan_test.cu` ClusterCondensingTest not enabled

[aamijar]

The ClusteringCondensingTest is not enabled.
https://github.com/rapidsai/cuml/blob/main/cpp/tests/sg/hdbscan_test.cu#L228-L239

I've tried to reenable this test, however the test does not pass successfully.

[csadorf]

@aamijar Thank you for reporting and attempting to re-enable it. Can you provide some details on the test failure?