Text editing lessons need updating

[ferdnyc]

The lessons on selecting, copying, and pasting text seem to be somewhat out of date with recent TalkBack releases.

There's no longer an "Editing options" item in the TalkBack context menu. Instead, there's an "Actions" item which holds text editing options, but that item is contextual so it won't always be present.

(I found this somewhat confusing, as it meant that if I had only focused the text control, "Actions" wasn't one of the menu options. I had to make sure I was editing the text inside the control -- the edit cursor was enabled -- in order to have the "Actions" option in the TalkBack menu.)

[JJdeGroot]

Thanks for bring up this change, @ferdnyc
I will update the content of the lesson.
TalkBack also had some other updates that might also affect some other content in this app.