rebased.

It seems cause error:

There was 1 failure:

1) Rector\Tests\Php80\Rector\Class_\AnnotationToAttributeRector\AnnotationToAttributeRectorTest::test with data set #14 (Symplify\SmartFileSystem\SmartFileInfo Object (...))
rules-tests/Php80/Rector/Class_/AnnotationToAttributeRector/Fixture/Doctrine/preserve_int_key_defined.php.inc
Failed asserting that string matches format description.
--- Expected
+++ Actual
@@ @@
 
 use Doctrine\ORM\Mapping as ORM;
 
-#[ORM\DiscriminatorMap([1 => 'CostDetailEntity'])]
+#[ORM\DiscriminatorMap(['1' => 'CostDetailEntity'])]

@TomasVotruba the Doctrine\ORM\Mapping\DiscriminatorMap is allow @param array<int|string, string> $value ref

https://github.com/doctrine/orm/blob/5283e1441cc020d526d4842c6bfa21c1a500886d/lib/Doctrine/ORM/Mapping/DiscriminatorMap.php#L22

the change seems make it single quoted to make CI green now e0f9d16 , compared to real integer on original PR :

#2735

Fixed 🎉 by update CurlyListNodeAnnotationToAttributeMapper 34f87fe with the following summary:

• the values of CurlyListNode are always integer keyed ordered from 0, so no need to check $key
• per-each data is an ArrayItemNode object, that has key property
• that key property need to be checked against ordered key order from 0, if it is numeric and not ordered, then create ArrayItem using its key property.

All checks have passed 🎉 @TomasVotruba it is ready for review.

Thank you ☺️