[Enhance]: update navbar Once after login,

[Jashwanth-rit]

Is your feature request related to a problem? Please describe.

Description: To improve user experience and provide a personalized interface, we need to enhance the navigation bar to update dynamically after a user logs in. This enhancement will ensure that logged-in users see relevant options and information in the navbar.

Describe the solution you'd like.

1. The navbar dynamically updates to reflect the user's login status.
2. User's name or username is displayed correctly after login.
3. All relevant navigation links are functional and lead to the appropriate pages.
4. The design of the navbar remains consistent and responsive across devices.

Describe alternatives you've considered.

No response

Additional context.

No response

Show us the magic with screenshots

No response

Checklist

• I have checked the Existing Issues
• I have read the Contributing Guidelines
• I want to work on this issue. (optional)

@aditya-bhaumik Kindly add gssoc and hacktoberfest tag and assign this to me.