Koushica - Hotfix - User profile auto save Issue fixes & UI tweaks

[CodewithKoushica]

Description

Fixes:

1. Auto-saving for Assigned Projects: Previously, assigned projects were not being saved correctly.
2. Auto-saving for Links: Fixed issue where adding/editing links in the User Profile was not saving properly.
3. UI Tweaks: Fixed an issue where the arrow icon was altered due to recent changes on the listing page.

Related PRS (if any):

Use the development backend and my current branch for the frontend.

Main changes explained:

1. Fixed auto-save issues by updating the userProfile object using deep cloning.
2. UI Fix: Added a new classname to ensure that previous styles are retained while incorporating the new change.

How to test:

1. check into current branch
2. do npm install and ... to run this PR locally
3. Clear site data/cache
4. log as admin user
5. go to dashboard→ Leaderboard

Test Cases

• Click on a QST, add a link, and save. Then, try assigning a new project and verify if the "Assign Project" button is clickable.
• Without clicking on a QST, try adding new links using the "Edit Link" option below the QST.
• Without clicking on a QST, try editing existing links and confirm the changes persist.

Screenshots or videos of changes:

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