refactor: Remove unnecessary ordering by lft attribute in query.

Author: terabytesoftw

src/NestedSetsBehavior.php

@@ -495,10 +495,6 @@ public function children(int|null $depth = null): ActiveQuery
                     $depth !== null ? $this->getDepthValue() : null,
                     $depth,
                 ),
-            )->addOrderBy(
-                [
-                    $this->leftAttribute => SORT_ASC,
-                ],
             );
     }