fix: resolve feedbackUtils test relative import and mock localStorage globally

[DebasmitaBose0]

Closes #5315

Summary

Fixes import resolution crashes and ReferenceError bugs in tests/feedbackUtils.test.mjs by correcting relative target directories and providing a fully functional localStorage simulation.

Changes Made

• Updated import to target the valid path ../src/utils/feedbackUtils.js.
• Constructed an inline globalThis.localStorage mock to safely trap state transactions during testing.
• Implemented a clean, zero-dependency expect wrapper mapping to native node:assert.

Testing

• Verified locally by executing:
  node --test --import "data:text/javascript,import { register } from 'node:module'; import { pathToFileURL } from 'node:url'; register('./tests/loaders/jsExtension.mjs', pathToFileURL('./'));" tests/feedbackUtils.test.mjs
• Outcome: 16/16 tests pass flawlessly.

Impact

Enables automated verification of feedback calculations and export routines, enhancing code coverage metrics.

Checklist

• Code follows project standards
• Tested locally
• No unrelated changes included
• Responsive design verified
• Accessibility considered

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