Added missing library file needed for the fix to work

Author: digitalrisedorset

lib/internal/Magento/Framework/App/PageCache/Identifier.php

@@ -7,6 +7,7 @@
 
 use Magento\Framework\App\ObjectManager;
 use Magento\Framework\Serialize\Serializer\Json;
+use Magento\PageCache\Model\App\Request\Http\IdentifierStoreReader;
 
 /**
  * Page unique identifier
@@ -36,7 +37,8 @@ class Identifier implements IdentifierInterface
     public function __construct(
         \Magento\Framework\App\Request\Http $request,
         \Magento\Framework\App\Http\Context $context,
-        Json $serializer = null
+        Json $serializer = null,
+        private IdentifierStoreReader $identifierStoreReader
     ) {
         $this->request = $request;
         $this->context = $context;
@@ -57,6 +59,8 @@ public function getValue()
                 ?: $this->context->getVaryString()
         ];
 
+        $data = $this->identifierStoreReader->getPageTagsWithStoreCacheTags($data);
+
         return sha1($this->serializer->serialize($data));
     }
 }