Fix crash ->getComments() return must be array over true on ClosureToArrowFunctionRector (#7761)

* Fix crash ->getComments() return must be array over true on ClosureToArrowFunctionRector

* final touch: mirror comment of ArrowFunction as its stmt

Author: samsonasik

rules/Php74/Rector/Closure/ClosureToArrowFunctionRector.php

@@ -89,7 +89,7 @@ public function refactor(Node $node): ?Node
         $comments = $node->stmts[0]->getAttribute(AttributeKey::COMMENTS) ?? [];
         if ($comments !== []) {
             $this->mirrorComments($arrowFunction->expr, $node->stmts[0]);
-            $arrowFunction->setAttribute(AttributeKey::COMMENTS, true);
+            $arrowFunction->setAttribute(AttributeKey::COMMENTS, $node->stmts[0]->getComments());
         }
 
         return $arrowFunction;