telegram: Support empty (only containing self user) chats
patch d168c6b0635df9185312cd63f8332647d85bac4b
Author: E. Bosch <presidev@AT@gmail.com>
Date: Sat Mar 18 04:42:34 CET 2023
* telegram: Support empty (only containing self user) chats
hunk ./telegram.py 148
+ self.irc.irc_channels[chan] = set()