Acceptance of Spaces in Rider Username in Enatega Multivendor Admin

Describe the bug
A security vulnerability has been identified in the Enatega Multivendor Admin, specifically in the rider section. The system is currently accepting spaces in the rider username, which poses a potential security risk. Usernames with spaces may lead to confusion, and it is recommended to disallow spaces in usernames for security reasons.

To Reproduce
Steps to reproduce the behavior:

Log in to the Enatega Multivendor Admin.
Navigate to the "Rider" section.
Attempt to create or edit a rider profile with a username containing spaces.
Observe that the system accepts the username with spaces without generating an error.
Expected behavior
Usernames for riders should not allow spaces to ensure clarity and security. The system should reject the input and provide an appropriate error message when attempting to use a username with spaces.

Screenshots
image

Desktop:

Browser: chrome

No files or tests are named in the issue. Start by reproducing the rider username validation in the Admin Rider create and edit flows, then trace the validation entry point; done means usernames containing spaces are rejected with an appropriate error message in both flows.

Written by the indexing model from the issue text.