fix: show a channel by default if there is at least one

src/app/chat/view.nim

@@ -128,6 +128,9 @@ QtObject:
   proc upsertChannel(self: ChatsView, channel: string) =
     if not self.messageList.hasKey(channel):
       self.messageList[channel] = newChatMessageList(channel, self.status)
+      # If there is only one channel, set is as active
+      if (self.activeChannel.chatItem == nil and self.chats.rowCount() == 1):
+        self.setActiveChannelByIndex(0)
   
   proc messagePushed*(self: ChatsView) {.signal.}
 

src/app/chat/views/channels_list.nim

@@ -38,7 +38,7 @@ QtObject:
       return ens.userNameOrAlias(self.status.chat.contacts[pubKey])
     generateAlias(pubKey)
 
-  method rowCount(self: ChannelsList, index: QModelIndex = nil): int = self.chats.len
+  method rowCount*(self: ChannelsList, index: QModelIndex = nil): int = self.chats.len
 
   proc renderBlock(self: ChannelsList, message: Message): string