Test(DashboardError): add empty-fallback edge case tests

[diksha78dev]

Description

Fixes #4196

Adds app/(root)/dashboard/error.empty-fallback.test.tsx with 5 isolated tests focusing on edge cases, empty strings, and missing inputs in the DashboardError component:

• Verifies that a generic ⚠️ emoji is rendered when error.message is an empty string.
• Verifies that the default fallback description string is used when error.message is an empty string.
• Verifies that the generic 'Something went wrong' heading is displayed.
• Verifies that the component renders without throwing runtime errors when the optional digest field is absent on the error object.
• Verifies that both the Try again button and Go back home link are present in the DOM when displaying the fallback UI.

Pillar

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

Visual Preview

(N/A - This PR only introduces test suite coverage and does not modify the visual layout or codebase components.)

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally.
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise).
• My commits follow the Conventional Commits format.
• I have updated README.md if I added a new theme or URL parameter.
• I have starred the repo.
• 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).
• (Recommended) I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

[Aamod-Dev]

Summary

The PR follows a known pattern of AI-generated superficial test files or inappropriate modifications that provide little to no meaningful runtime coverage and clutter the repository.

Required Changes

Issue 1

• Problem: The test file creates or simulates interactions on dummy structures, or simply adds redundant tests.
• Impact: It provides 0 real test coverage.
• Required Fix: Ensure the PR tests actual new runtime behavior and does not just add redundant tests.

[github-actions]

📦 Next.js Bundle Size Report (Gzipped Sizes)

✨ No significant bundle size changes detected.

📊 Summary of Totals

Category	PR Size	Base Size	Difference
Total JS	3405.30 KB	3405.30 KB	0 B
Total CSS	252.94 KB	252.94 KB	0 B

[github-actions]

🎉 Congratulations @diksha78dev! Your PR has been successfully merged. 🚀

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