TASK: Introduce b/c layer for Node::getLabel()

Neos.ContentRepository.Core/Classes/Projection/ContentGraph/Node.php

@@ -101,6 +101,28 @@ public function hasProperty(string $propertyName): bool
         return $this->properties->offsetExists($propertyName);
     }
 
+    /**
+     * Returned the node label as generated by the configured node label generator.
+     *
+     * In PHP please use Neos' {@see NodeLabelRendererInterface} instead.
+     *
+     * For Fusion please use the FlowQuery operation:
+     * ```
+     * ${q(node).label()}
+     * ```
+     *
+     * @deprecated will be removed before the final 9.0 release
+     */
+    public function getLabel(): string
+    {
+        if (!class_exists(\Neos\Neos\Domain\NodeLabel\NodeLabelRenderer::class)) {
+            throw new \BadMethodCallException('node labels are removed from standalone cr.');
+        }
+        // highly illegal
+        /** @phpstan-ignore-next-line */
+        return (new \Neos\Neos\Domain\NodeLabel\NodeLabelRenderer())->renderNodeLabel($this)->value;
+    }
+
     public function equals(Node $other): bool
     {
         return $this->subgraphIdentity->equals($other->subgraphIdentity)