Fix reconnect sentinel when not reconnecting in send_loop
Fix reconnect sentinel when not reconnecting in send_loop

It would cause issues with the debug logs, since it assumes it's
a TLMessage, which have an .obj attribute. Second, the send_loop
is also smarter regarding reconnects (since OSError often occur
due to not being connected at all, namely ConnectionResetError).

LonamiWebs/Telethon,LonamiWebs/Telethon,LonamiWebs/Telethon,LonamiWebs/Telethon,expectocode/Telethon