fix: resolve syntax errors and missing imports in registration logic

[Goutam-2702]

Closes #368

This PR fixes a critical SyntaxError in backend/src/controllers/registrationController.js caused by incorrectly merged git conflicts (unmatched braces and duplicated functions). It also fixes undefined endpoints being imported into registrationRoutes.js.

Testing Steps

1. Clone this branch and start the backend server (
   pm run dev or
   ode src/app.js in the �ackend directory).
2. Verify that the server starts up without any SyntaxError: Unexpected token 'catch' crash.
3. Review the code to ensure no functionality was lost during conflict resolution.

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[github-actions]

❌ PR Format Check — Failed — Please Fix Below

Hi @Goutam-2702! Please fix the issues below before your PR can proceed to mentor review.

❌ Must Fix Before Proceeding

❌ Issue #368 is not assigned to you (@Goutam-2702) — You must be assigned to the issue before submitting a PR.

Comment /assign on Issue #368 or ask a maintainer to assign it to you.

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