[PHPStan] Use NodeVisitor::* on RectorInterface::refactor() @return method and update rules to use specific of its constant

Author: samsonasik

src/Rector/AbstractRector.php

@@ -188,7 +188,7 @@ final public function enterNode(Node $node): int|Node|null
         }
 
         if ($isIntRefactoredNode) {
-            // @see NodeTraverser::* codes, e.g. removal of node of stopping the traversing
+            // @see NodeVisitor::* codes, e.g. removal of node of stopping the traversing
             if ($refactoredNode === NodeVisitor::REMOVE_NODE) {
                 // log here, so we can remove the node in leaveNode() method
                 $this->toBeRemovedNodeId = spl_object_id($originalNode);