Fix Saucelabs test for messaging

Author: hsubox76

packages/messaging/src/controllers/sw-controller.test.ts

@@ -277,6 +277,10 @@ describe('SwController', () => {
     });
 
     it('warns if there are more action buttons than the browser limit', async () => {
+      // This doesn't exist on Firefox.
+      if (!Notification.maxActions) {
+        return;
+      }
       stub(Notification, 'maxActions').value(1);
 
       const warnStub = stub(console, 'warn');

packages/messaging/src/controllers/sw-controller.ts

@@ -339,6 +339,7 @@ function showNotification(details: NotificationDetails): Promise<void> {
   const title = details.title ?? '';
 
   const { actions } = details;
+  // Note: Firefox does not support the maxActions property.
   const { maxActions } = Notification;
   if (actions && maxActions && actions.length > maxActions) {
     console.warn(