In the meantime if the vertical zoom is large enough & the Track has a Drum Map those names from the Drum Map will show on the notes in the Key Editor. Not as good as being on the Keyboard but better than nothing. I suppose you could put a chromatic stack of muted notes in a Part and use that to always see the names.
In the attached both MIDI Parts are exactly the same. The one on the left is on a Track that has a Drum Map on it. The one on the right has no Drum Map.