bug#62601: perl-mode bracket indentation distorted by label

[Dan Jacobson]

In perl mode, the indentation of the two closing brackets (solo item on
line) gets reduced by the LI:.

for my $l (@lines) {
  LI:
    for ( $l->{text} ) {
        next LI unless length;
        next LI if /^\S/;
  }
    for ( 0 .. $#zh ) {
        next unless $l->{ $zh[$_] };
        $l->{info} .= $l->{ $zh[$_] } . $en[$_];
  }
}
emacs-version "28.2"