minor #4608 use EmptyNode instead of an Nodes instance without children (xabbuh)

This PR was merged into the 3.x branch.

Discussion
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use EmptyNode instead of an Nodes instance without children

Commits
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e31a6e4 use EmptyNode instead of an Nodes instance without children

Author: fabpot

src/Node/ModuleNode.php

@@ -41,7 +41,11 @@ public function __construct(Node $body, ?AbstractExpression $parent, Node $block
         if (!$embeddedTemplates instanceof Node) {
             trigger_deprecation('twig/twig', '3.21', \sprintf('Not passing a "%s" instance as the "embedded_templates" argument of the "%s" constructor is deprecated.', Node::class, static::class));
 
-            $embeddedTemplates = new Nodes($embeddedTemplates ?? []);
+            if (null !== $embeddedTemplates) {
+                $embeddedTemplates = new Nodes($embeddedTemplates);
+            } else {
+                $embeddedTemplates = new EmptyNode();
+            }
         }
 
         $nodes = [