perhaps get some history when joining a channel

[userappgate]

It happened that the some user mentions me in a channel I'm not, and this triggers an event to join said channel, but that happens after the message was sent, so the channel is joined and there is no message.

It could be good to fetch some history when joining a channel, just in case the previous message was a mention.

GroupJoined(type='group_joined', channel=Channel(id='CHANNELID', name_normalized='random', purpose=Topic(value='...'), topic=Topic(value='...'), num_members=0, is_member=True, is_channel=False, is_group=True, is_mpim=False, latest=LatestMessage(ts=1696935601.819019)))
Join(type='member_joined_channel', user='ASDASDASD', channel='CHANNELID')

Probably the latest message can be used to fetch the latest message.