MessageReaction constructor
      const
      MessageReaction({ 
    
- required ReactionType type,
- required int totalCount,
- required bool isChosen,
- required List<MessageSender> recentSenderIds,
Contains information about a reaction to a message
Implementation
const MessageReaction({
  required this.type,
  required this.totalCount,
  required this.isChosen,
  required this.recentSenderIds,
});