bug#60210: 30.0.50; tab-bar height not recalculated when face changes

[Gregory Heytings]

> > > Thanks, this LGTM.  If you tested this with tab bars of more than a 
> > > single line, including when tabs are removed so a single line is once 
> > > again long enough, please install on the release branch.
> >
> > I did test it, but I don't use tab bars, so I'm not 110% sure.  Juri, 
> > could you please test the patch?
>
> Thanks for the patch.  I tested it in emacs-29 with tab-bar-lines > 1 
> and see no problems.

Thanks!  Pushed (b14bbd108e), and closing.