Avoid cache redirect error in NodeAccessControlHandler.

Closes #3504114

core/modules/node/src/NodeAccessControlHandler.php

@@ -223,7 +223,16 @@ protected function checkViewAccess(NodeInterface $node, AccountInterface $accoun
       return NULL;
     }
 
+    // When access is granted due to the 'view own unpublished content'
+    // permission and for no other reason, node grants are bypassed. However,
+    // to ensure the full set of cacheable metadata is available to variation
+    // cache, additionally add the node_grants cache context so that if the
+    // status or the owner of the node changes, cache redirects will continue to
+    // reflect the latest state without needing to be invalidated.
     $cacheability->addCacheContexts(['user']);
+    if ($this->moduleHandler->hasImplementations('node_grants')) {
+      $cacheability->addCacheContexts(['user.node_grants:view']);
+    }
     if ($account->id() != $node->getOwnerId()) {
       return NULL;
     }