bug#69454: Not possible to insert an empty vtable

[Eli Zaretskii <eliz@gnu.org>]

> From: Joost Kremers <joostkremers@fastmail.fm>
> Cc: Adam Porter <adam@alphapapa.net>,  Lars Ingebrigtsen <larsi@gnus.org>,
>   69454@debbugs.gnu.org,  Eric Marsden <eric.marsden@risk-engineering.org>
> Date: Thu, 30 May 2024 23:52:20 +0200
> 
> On Thu, May 30 2024, Joost Kremers wrote:
> > 0002-Fix-recomputing-of-vtable-column-alignment.patch
> >
> > This one fixes what I believe to be another bug: `vtable--compute-columns`
> > should be able to recompute the columns, including setting the alignment
> > property. It didn't actually do the latter, though.
> 
> Actually, forget about this one. I just realised that `vtable--compute-columns`
> doesn't override the alignment property because it may have been set explicitly
> in `make-vtable`. The actual problem is that if a table is created without data,
> the alignment property of each column is set to `right`, even though there's no
> reason to do so.
> 
> I'll try and come up with a better patch.

Thanks for working on this.