test(app): wait for the model before the live-pin journey (#9102)

Co-authored-by: paseo-bot[bot] <266920839+paseo-bot[bot]@users.noreply.github.com>

packages/app/e2e/browser/new-workspace-live-pin.spec.ts

@@ -1,6 +1,7 @@
 import type { Page } from "@playwright/test";
 import { expect, test } from "../support/fixtures";
 import { gotoAppShell } from "../support/helpers/app";
+import { expectComposerModel } from "../support/helpers/agent-profiles";
 import {
   delayBrowserAgentCreatedStatus,
   openNewWorkspaceComposer,
@@ -69,6 +70,8 @@ test.describe("New workspace live pin", () => {
       await gotoAppShell(page);
       await waitForSidebarHydration(page);
       await openNewWorkspaceComposer(page, seeded);
+      // The composer appears before its provider catalog has hydrated.
+      await expectComposerModel(page, "Ten second stream");
       await submitNewWorkspacePrompt(page, "Pin me while I start");
 
       await creation.waitForCreateRequest();