fix(frontend): marketplace top agents section (#10571)

Currently, we’re only seeing the top 20 agents, but we need to display
all of them until we see more call-to-action buttons.

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] All tests are working perfectly
  - [x] It's working manually as well

autogpt_platform/frontend/src/app/(platform)/marketplace/components/MainMarketplacePage/useMainMarketplacePage.ts

@@ -29,6 +29,7 @@ export const useMainMarketplacePage = () => {
   } = useGetV2ListStoreAgents(
     {
       sorted_by: "runs",
+      page_size: 1000,
     },
     {
       query: {

autogpt_platform/frontend/src/tests/pages/navbar.page.ts

@@ -13,7 +13,11 @@ export class NavBar {
   }
 
   async clickBuildLink() {
-    await this.page.getByTestId("navbar-link-build").click();
+    const link = this.page.getByTestId("navbar-link-build");
+    await link.waitFor({ state: "visible", timeout: 15000 });
+    await link.scrollIntoViewIfNeeded();
+    await link.click();
+    await this.page.waitForURL(/\/build$/, { timeout: 15000 });
   }
 
   async clickMarketplaceLink() {