update jmessage add serverMessageId field

Author: huangminlinux

ios/RCTJMessageModule/JMessageHelper.m

@@ -338,6 +338,7 @@ - (NSMutableDictionary *)messageToDictionary {
   NSMutableDictionary *dict = [NSMutableDictionary new];
 
   dict[@"id"] = self.msgId;
+  dict[@"serverMessageId"] = self.serverMessageId;
   dict[@"from"] = [self.fromUser userToDictionary];
 
   if (self.content.extras != nil) {