Updated function definition and calling signature for addOrUpdate function for users collection

[joyguptaa]

Date: 20 March 2024

Developer Name: Joy Gupta

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Issue Ticket Number

Phase 1

• https://github.com/Real-Dev-Squad/website-backend/issues/1974

Description

This PR contains refactoring of sync-external-account API and also simplified implementation of addorupdate function based on Ankush's suggestions.

Documentation Updated?

• [ ] Yes
• [x] No

Under Feature Flag

• [ ] Yes
• [x] No

Database Changes

• [ ] Yes
• [x] No

Breaking Changes

• [ ] Yes
• [x] No

Development Tested?

• [x] Yes
• [ ] No

Screenshots

NA, as it is just code refactoring.

Test Coverage

NA, as it is just code refactoring.

Additional Notes