fix(frontend): address latest CodeRabbit review suggestions

- Use valid sort value "runs" instead of undefined in MainSearchResultPage
  test defaultProps to match production default and satisfy type contract
- Remove redundant marketplacePage.goto() navigation in E2E test since
  the page is already at /marketplace after login

Co-authored-by: Ubbe <0ubbe@users.noreply.github.com>

autogpt_platform/frontend/src/app/(platform)/marketplace/components/MainSearchResultPage/__tests__/auth-state.test.tsx

@@ -9,7 +9,7 @@ import {
 
 const defaultProps = {
   searchTerm: "test-search",
-  sort: undefined,
+  sort: "runs" as const,
 };
 
 describe("MainSearchResultPage - Auth State", () => {

autogpt_platform/frontend/src/app/(platform)/marketplace/components/MainSearchResultPage/__tests__/error-handling.test.tsx

@@ -10,7 +10,7 @@ import { create500Handler } from "@/tests/integrations/helpers/create-500-handle
 
 const defaultProps = {
   searchTerm: "test-search",
-  sort: undefined,
+  sort: "runs" as const,
 };
 
 describe("MainSearchResultPage - Error Handling", () => {

autogpt_platform/frontend/src/app/(platform)/marketplace/components/MainSearchResultPage/__tests__/no-results.test.tsx

@@ -6,7 +6,7 @@ import { http, HttpResponse } from "msw";
 
 const defaultProps = {
   searchTerm: "nonexistent-search-term-xyz",
-  sort: undefined,
+  sort: "runs" as const,
 };
 
 describe("MainSearchResultPage - No Results", () => {

autogpt_platform/frontend/src/app/(platform)/marketplace/components/MainSearchResultPage/__tests__/rendering.test.tsx

@@ -4,7 +4,7 @@ import { MainSearchResultPage } from "../MainSearchResultPage";
 
 const defaultProps = {
   searchTerm: "test-search",
-  sort: undefined,
+  sort: "runs" as const,
 };
 
 describe("MainSearchResultPage - Rendering", () => {

autogpt_platform/frontend/src/tests/marketplace-agent.spec.ts

@@ -22,7 +22,6 @@ test.describe("Marketplace Agent Page - Cross-Page Flows", () => {
     const richUser = getTestUserWithLibraryAgents();
     await loginPage.login(richUser.email, richUser.password);
     await hasUrl(page, "/marketplace");
-    await marketplacePage.goto(page);
 
     const firstStoreCard = await marketplacePage.getFirstTopAgent();
     await firstStoreCard.click();