Make DateTime.ACCEPTS a multi, as it should be
Make DateTime.ACCEPTS a multi, as it should be

Fixes DateTime(Str).ACCEPTS(True), which was the new reason why the
code of https://github.com/rakudo/rakudo/issues/4278 failed.

salortiz/rakudo,labster/rakudo,rakudo/rakudo,MasterDuke17/rakudo,rakudo/rakudo,labster/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,salortiz/rakudo,salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,tbrowder/rakudo,tbrowder/rakudo,rakudo/rakudo,labster/rakudo,salortiz/rakudo,rakudo/rakudo,labster/rakudo,MasterDuke17/rakudo,labster/rakudo,MasterDuke17/rakudo,salortiz/rakudo,rakudo/rakudo,tbrowder/rakudo,tbrowder/rakudo,rakudo/rakudo,labster/rakudo,MasterDuke17/rakudo