bug#59141: 28.1.90; Face :extend when all the line but trailing \n is invisible

[Juri Linkov]

> The solution to this problem is simple: don't use the :extend
> attribute for these faces.  That's all.  This attribute is not
> intended for what you want to achieve here.  A whole bunch of problems
> automatically gets resolved if you don't use :extend.

This problem exists even when the :extend attribute is not used as
Kévin demonstrated in https://debbugs.gnu.org/52587#13

So I see the only solution to modify the display engine
somewhere in `setup_for_ellipsis', so that after displaying
`default_invis_vector' or `DISP_INVIS_VECTOR', it could
remove all face text attributes from the next newline
that follows the ellipsis.