The profile popout already existed and was reachable from eleven places —
messages, mentions, avatars, member list, DMs, activity panel — but no voice
surface opened it, so clicking someone during a call did nothing.
Wire it into the voice user rows (VoiceChannel's sidebar list) and the name
label on grid tiles, whose avatar was already a ProfileAvatar; the name beside
it not reacting read as the click failing.
Left mobile alone deliberately: MobileSpacesScreen already opens the profile
from its row wrapper, and MobileVoiceJoinSheet would layer a history-pushed
full-screen profile inside a bottom sheet, which cannot be verified here.
devsyncwrld