The presence setting is more suited in 'Account & privacy'
section as it is not related to notifications in anyway
and resembles privacy of user by allowing user to hide
his status of being online.
This isn't the best writing, but it'll help us remember to cover these
details when we do a major pass on this article after adding upcoming
status changes.
As we change the icon for Group PMs in #18160, the docs related
to it is now outdated. This commit removes the documentation part
that is outdated from status-and-availability section.
For privacy-minded folks who don't want to leak the
information of whether they're online, this adds an
option to disable sending presence updates to other
users.
The new settings lies in the "Other notification
settings" section of the "Notification settings"
page, under a "Presence" subheading.
Closes#14798.