Moo speed up coercion + default with eval block instead of DIE handler.

gistfile1.pl

{
    package Foo;
    use Moo;
    has with_coerce1 => (
        is        => 'rw',
        coerce    => sub { 1 },
        default   => sub { 1 },
    );
    has with_coerce2 => (
        is        => 'rw',
        coerce    => sub { 1 },
        default   => sub { 1 },
    );
    has with_coerce3 => (
        is        => 'rw',
        coerce    => sub { 1 },
        default   => sub { 1 },
    );
}

Foo->new for 1..1_000_000;

__END__
$ git branch
  bug/rt.cpan.org-97653
* master

$ time perl -Ilib ~/tmp/test.plx

real	0m14.192s
user	0m14.170s
sys	0m0.018s

$ git co bug/rt.cpan.org-97653
Switched to branch 'bug/rt.cpan.org-97653'
$ git branch
* bug/rt.cpan.org-97653
  master
$ time perl -Ilib ~/tmp/test.plx

real	0m4.733s
user	0m4.710s
sys	0m0.015s