test(dashboard): add test for refresh param bypass cache (JhaSourav07#782)

## Description

Fixes JhaSourav07#707 

## Pillar

- [] 🎨 Pillar 1 — New Theme Design
- [] 📐 Pillar 2 — Geometric SVG Improvement
- [] 🕐 Pillar 3 — Timezone Logic Optimization
- [x] 🛠️ Other (Bug fix, refactoring, docs)

## Visual Preview

## Checklist before requesting a review:

- [x] I have read the `CONTRIBUTING.md` file.
- [x] I have tested these changes locally
(`localhost:3000/api/streak?user=YOUR_USERNAME`).
- [x] I have run `npm run format` and `npm run lint` locally and
resolved all errors (CI will fail otherwise).
- [x] My commits follow the Conventional Commits format (e.g.,
`feat(themes): ...`, `fix(calculate): ...`).
- [] I have updated `README.md` if I added a new theme or URL parameter.
- [x] I have started the repo.
- [x] I have made sure that i have only one commit to merge in this PR.
- [] The SVG output matches the CommitPulse "premium quality" aesthetic
standard (no raw elements, smooth animations, correct fonts).
- [x] (Recommended) I joined the CommitPulse Discord community for
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Author: JhaSourav07

app/(root)/dashboard/[username]/page.test.tsx

@@ -140,6 +140,19 @@ describe('DashboardPage', () => {
       expect(screen.getByText('Peak Streak: 15')).toBeDefined();
       expect(screen.getByText('Contributions: 500')).toBeDefined();
     });
+
+    it('calls getFullDashboardData with bypassCache: true when refresh param is set', async () => {
+      const PageContent = await DashboardPage({
+        params: Promise.resolve({ username: 'octocat' }),
+        searchParams: Promise.resolve({ refresh: 'true' }),
+      });
+
+      render(PageContent);
+
+      expect(getFullDashboardData).toHaveBeenCalledWith('octocat', {
+        bypassCache: true,
+      });
+    });
   });
   it('passes the correct activity data to Heatmap', async () => {
     const PageContent = await DashboardPage({