Evas textblock: clear ellipsis item at start of layout
The ellipsis item was tracked so it can be inserted at the correct
position. It was not cleared properly, leading to a randomly failing
Actually, it seems that there is no need to even store the ellipsis item
as the object data, so it was also moved to be in the layout context,
A special shoutout to ManMower for lending me his machine, as the test
suite didn't fail on mine.