refactor cache context

app/docroot/modules/custom/cache_context/cache_context.info.yml

+name: Cache context
+description: Custom task
+package: Tasks
+
+type: module
+core: 8.x
+core_version_requirement: ^8 || ^9

app/docroot/modules/custom/cache_context/cache_context.module

+<?php
+
+/**
+ * Implements hook_node_view().
+ */
+function cache_context_node_view(array &$build, $node) {
+  if ($node->bundle() == 'people') {
+    $build["elements"]["#cache"]["contexts"][] = 'url.query_args';
+  }
+}
+
+/**
+ * Implements hook_preprocess().
+ */
+function cache_context_preprocess(&$variables, $hook) {
+  if ($hook == 'details' and $variables["element"]["#bundle"] == 'people' and $variables["element"]["#group_name"] == 'group_films') {
+    $get = \Drupal::request()->query->get('tab');
+    if ($get == 'films') {
+      $variables["attributes"]['open'] = '';
+    }
+  }
+}