bug#65267: 30.0.50; modifying debug-ignored-errors during startup with --debug-init is broken

[Eli Zaretskii]

> Cc: 65267@debbugs.gnu.org, monnier@iro.umontreal.ca,
>  npostavs@users.sourceforge.net
> Date: Thu, 17 Aug 2023 17:31:00 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Have you considered my humble suggestion of reverting to pre-bug#64163
> > state and simply removing end-of-file from the default value of
> > debug-ignored-errors?
> 
> Yes.  This cannot fly, since we had end-of-file there for a long time
> (I see it in Emacs 20).

And, of course, end-of-file is just one of the errors in the list;
bug#64163 could have been equally reported with any of those other
ones, and the solution is the same.