Bug 1715880 - Disable bfcache-in-parent when running devtools/client/application/test/browser/browser_application_panel_list-several-workers.js, r=ochameau

Differential Revision: https://phabricator.services.mozilla.com/D117461

devtools/client/application/test/browser/browser_application_panel_list-several-workers.js

@@ -12,6 +12,12 @@ const SIMPLE_URL = URL_ROOT + "resources/service-workers/simple.html";
 const OTHER_SCOPE_URL = URL_ROOT + "resources/service-workers/scope-page.html";
 
 add_task(async function() {
+  // Disable bfcache for Fission for now.
+  // If Fission is disabled, the pref is no-op.
+  await SpecialPowers.pushPrefEnv({
+    set: [["fission.bfcacheInParent", false]],
+  });
+
   await enableApplicationPanel();
 
   const { panel, commands, tab } = await openNewTabAndApplicationPanel(