Fix: Comprehensive Fixes and Enhancements for User Feedback System

[kmanish527]

🚀 Pull Request Checklist

• ✅ My issue is assigned to me, and I have not taken up another task simultaneously.
• 🔁 I have pulled the latest changes from the main branch.
• 🧪 My code is tested and does not break existing functionality.
• 📚 I have added/updated documentation wherever necessary.
• 🧹 My code follows the project’s coding standards.
• ✍️ My commits are clear and meaningful.
• 🧾 I have linked the issue this PR addresses with Closes #204 .

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📌 Related Issue

Closes #204

🧠 Description

• A critical backend bug was resolved where a user's userId was being saved even on anonymous submissions. This was fixed by making the userId optional in the database model and updating the controller to conditionally add the ID only if the submission is not anonymous.

• A frontend bug was fixed where the feedback popup would display stale data from the previous submission. The component's state is now programmatically reset every time the modal is opened, ensuring a clean, blank form for the user.

• All native browser alert()s were replaced with modern, non-blocking react-toastify notifications. This logic was centralized within the Feedback to handle success and error states, providing a more professional and seamless user experience.

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✅ Type of Change

• 🐞 Bug fix
• 💡 Feature
• 🧹 Code cleanup/refactor
• 🧪 Test cases
• 📚 Docs update

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[github-actions]

🙌 Thanks @kmanish527 for raising this PR!
Our team will review it soon ⏳ — meanwhile, please make sure your PR follows our contributing guidelines 👉 Contributing Guidelines 🎉

[github-actions]

🎉🎉 Thank you for your contribution! Your PR #205 has been merged! 🎉🎉