[CodingStyle] Mirror comment on SplitDoubleAssignRector (#7977)

Author: samsonasik

rules-tests/CodingStyle/Rector/Assign/SplitDoubleAssignRector/Fixture/mirror_comment.php.inc

@@ -0,0 +1,30 @@
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\Assign\SplitDoubleAssignRector\Fixture;
+
+class MirrorComment
+{
+    public function run()
+    {
+        // some comment
+        $one = $two = 1;
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\Assign\SplitDoubleAssignRector\Fixture;
+
+class MirrorComment
+{
+    public function run()
+    {
+        // some comment
+        $one = 1;
+        $two = 1;
+    }
+}
+
+?>

rules/CodingStyle/Rector/Assign/SplitDoubleAssignRector.php

@@ -80,6 +80,7 @@ public function refactor(Node $node): ?array
             return null;
         }
 
+        $this->mirrorComments($collectExpressions[0], $node);
         return $collectExpressions;
     }