Attach to the socket events; returns unsubscribe.
All current reactions on a message.
Reactions grouped by emoji: { '👍': [jid, ...] }.
{ '👍': [jid, ...] }
Wire into sock.ev.on('messages.reaction', handler).
sock.ev.on('messages.reaction', handler)
Fires per reaction event (adds AND removals). Returns unsubscribe.
Readonly
Attach to the socket events; returns unsubscribe.