Hello again, I found this thread , and there the HSO preset file was in a completely unexpected place.
Well, with you it is a little bit same, but that preset file is not completely away in outer space and I think it should also work from where it is right now.
However, you could try moving FCP_SMT_027_HSO_Presets_01.vstsound from
/Library/Application Support/Steinberg/Content/HALion/VST Sound
to
/Library/Application Support/Steinberg/Content/VST Sound
Then do a double click again on that file and try again.
I also found another thread with the same issue, but that case solved itself by installing Dorico 3, so this won’t help you either.