Merge branch 'lashmanov/338439-enable-assumeImmutableResults' into 'master'

Set assumeImmutableResults flag to true in pages/shared/mount_runner_instructions.js (#338439)

See merge request gitlab-org/gitlab!71029

app/assets/javascripts/pages/shared/mount_runner_instructions.js

@@ -9,7 +9,12 @@ export function initInstallRunner(componentId = 'js-install-runner') {
   const installRunnerEl = document.getElementById(componentId);
 
   if (installRunnerEl) {
-    const defaultClient = createDefaultClient();
+    const defaultClient = createDefaultClient(
+      {},
+      {
+        assumeImmutableResults: true,
+      },
+    );
 
     const apolloProvider = new VueApollo({
       defaultClient,