Allow configuration paths based on system.xml

Resolves #27678

Author: navarr

app/code/Magento/Config/Model/Config/PathValidator.php

@@ -40,6 +40,11 @@ public function __construct(Structure $structure)
      */
     public function validate($path)
     {
+        $element = $this->structure->getElementByConfigPath($path);
+        if ($element->getConfigPath()) {
+            $path = $element->getConfigPath();
+        }
+        
         $allPaths = $this->structure->getFieldPaths();
 
         if (!array_key_exists($path, $allPaths)) {