Reach the menu behind the avatar of a sender

[mehranlatifi83]

Summary

The avatar of whoever sent a message opens a menu when it is held down:
their profile, a chat with them, a mention of them, and a search of what
they have said here. The avatar is drawn by the cell and is no view of its
own, so touch exploration had nothing to hold, and none of the four could
be reached at all.

The message now offers that menu as an action of its own. Holding the
avatar is what it asks for, so the menu is come by the same way it is by
everyone else, and whatever it grows to hold is come by that way too.

The menu is drawn around the picture the avatar stands for and does not
come up without one, so it is not offered for a sender who has none.

Nothing else about the message changes: holding the message itself still
selects it, as it did.

Checking it

With TalkBack on, in a supergroup, swipe onto a message from someone else who has a profile photo and open the actions.

Before, the menu behind their avatar could not be reached at all. Now there is an action that opens it, with the same entries a long press gives: open profile, send message, mention, and search their messages.

Long pressing the message itself still selects it, as before.