avoid better type override in AddReturnArrayDocblockBasedOnArrayMapRector (#7319)

Author: TomasVotruba

rules-tests/TypeDeclaration/Rector/ClassMethod/AddReturnArrayDocblockBasedOnArrayMapRector/Fixture/override_mixyed.php.inc

@@ -0,0 +1,39 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\AddReturnArrayDocblockBasedOnArrayMapRector\Fixture;
+
+final class OverrideMixed
+{
+    /**
+     * @param array $items
+     * @return mixed[]
+     */
+    public function process(array $items)
+    {
+        return array_map(function ($item): int {
+            return $item;
+        }, $items);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\AddReturnArrayDocblockBasedOnArrayMapRector\Fixture;
+
+final class OverrideMixed
+{
+    /**
+     * @param array $items
+     * @return int[]
+     */
+    public function process(array $items)
+    {
+        return array_map(function ($item): int {
+            return $item;
+        }, $items);
+    }
+}
+
+?>

rules-tests/TypeDeclaration/Rector/ClassMethod/AddReturnArrayDocblockBasedOnArrayMapRector/Fixture/skip_override.php.inc

@@ -0,0 +1,17 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\AddReturnArrayDocblockBasedOnArrayMapRector\Fixture;
+
+final class SkipOverride
+{
+    /**
+     * @param array $items
+     * @return positive-int[]
+     */
+    public function process(array $items)
+    {
+        return array_map(function ($item): int {
+            return $item;
+        }, $items);
+    }
+}

rules/TypeDeclaration/Rector/ClassMethod/AddReturnArrayDocblockBasedOnArrayMapRector.php

@@ -127,7 +127,12 @@ public function refactor(Node $node): null|Function_|ClassMethod
         $functionLikePhpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
         $returnOriginalType = $functionLikePhpDocInfo->getReturnType();
-        if ($returnOriginalType instanceof IntersectionType && $returnOriginalType->isArray()->yes()) {
+
+        if ($returnOriginalType instanceof ArrayType && ! $returnOriginalType->getItemType() instanceof MixedType) {
+            return null;
+        }
+
+        if ($returnOriginalType instanceof IntersectionType) {
             return null;
         }