Enum::getByOrdinal: preserve key on array_slide

Because constants can't be numeric there was no issue but it was the wrong argument anyway

Author: marc-mabe

src/MabeEnum/Enum.php

@@ -219,7 +219,7 @@ final public static function getByOrdinal($ordinal)
         $ordinal   = (int) $ordinal;
         $class     = get_called_class();
         $constants = self::detectConstants($class);
-        $item      = array_slice($constants, $ordinal, 1, false);
+        $item      = array_slice($constants, $ordinal, 1, true);
         if (!$item) {
             throw new InvalidArgumentException(sprintf(
                 'Invalid ordinal number, must between 0 and %s',