[Perl/perl5] 8be87d: Set builtin::indexed proto to "@"

[James Raspass via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 8be87d1d421762a600a29876d805518e10bdf84c
      
https://github.com/Perl/perl5/commit/8be87d1d421762a600a29876d805518e10bdf84c
  Author: James Raspass <jrasp...@gmail.com>
  Date:   2023-08-17 (Thu, 17 Aug 2023)

  Changed paths:
    M builtin.c
    M lib/builtin.t

  Log Message:
  -----------
  Set builtin::indexed proto to "@"