test(ShareSheet-mouse-interactivity): ShareSheet mouse interactivity — hover, click propagation and touch events

[Subhooo5]

Description

Fixes #2617

• Created components/dashboard/ShareSheet.mouse-interactivity.test.tsx as a dedicated test file for hover, click, and touch interactions
• Exposes named mock handler refs (mockHandleTwitter etc.) at module scope for per-test call-count assertions
• Test 1: Clicking the backdrop overlay fires onClose exactly once — click propagation to the overlay handler works correctly
• Test 2: Clicking inside the modal panel does not call onClose — e.stopPropagation() correctly prevents bubbling to the backdrop
• Test 3: mouseEnter on the QR group div confirms hover overlay content (Copy Image, Save File) is present in the DOM — tooltip content available to pointer users
• Test 4: mouseLeave on the QR group confirms the overlay retains its opacity-0 class — hide-on-leave markup is intact
• Test 5: Full touch sequence (touchStart → touchEnd → click) on the Share on X button fires the handler exactly once — touch events do not duplicate or suppress the click

Pillar

• 🛠️ Other (Bug fix, refactoring, docs)

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (localhost:3000/api/streak?user=YOUR_USERNAME).
• I have run npm run format and npm run lint locally and resolved all errors.
• My commits follow the Conventional Commits format.
• I have starred the repo.
• I have made sure that i have only one commit to merge in this PR.

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[Subhooo5]

Hey @JhaSourav07 Test added successfully. All existing tests pass locally. Feel free to review, add necessary labels and merge it. 🫂🚀

[github-actions]

🎉 Congratulations @Subhooo5! Your PR has been successfully merged. 🚀

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