ALSA: ump: Indicate the inactive group in legacy substream names

Since the legacy rawmidi has no proper way to know the inactive group,
indicate it in the rawmidi substream names with "[Inactive]" suffix
when the corresponding UMP group is inactive.

Link: https://patch.msgid.link/20241129094546.32119-3-tiwai@suse.de


Signed-off-by: Takashi Iwai <tiwai@suse.de>