ENGCOM-7761: #24353 Fix Varnish 6 Too many restarts issue #28137

 - Merge Pull Request #28137 from ihor-sviziev/magento2:fix-varnish6-too-many-restarts
 - Merged commits:
   1. cef2ac3

Author: magento-engcom-team

app/code/Magento/PageCache/etc/varnish6.vcl

@@ -23,6 +23,10 @@ acl purge {
 }
 
 sub vcl_recv {
+    if (req.restarts > 0) {
+        set req.hash_always_miss = true;
+    }
+
     if (req.method == "PURGE") {
         if (client.ip !~ purge) {
             return (synth(405, "Method not allowed"));