Add Unit Tests for receiveLoginData Function

[coderabbitai]

The receiveLoginData function in packages/login/src/receiveLoginData.ts lacks test coverage. Unit tests should be added to verify its functionality and error handling, especially given its critical role in the login process.

This issue was created in response to PR #2107 and the related comment here.

Tasks:

• Add unit tests for normal operation with expected inputs.
• Add unit tests for handling unexpected inputs and error conditions.