Change /PolarisAdmin (Web Admin) so that leading and trailing spaces are automatically trimmed from the Username and External ID fields upon entry.

Problem Statement
Currently, if administrators accidentally enter a username or external ID with a leading or trailing space, it is saved as entered. This creates login and authentication issues for end users, since the system considers the space a part of the credential. This can be difficult to troubleshoot and frustrating for both administrators and end users.

This is especially likely to happen when copying/pasting from certain user management platforms.

Proposed Enhancement
Automatically strip any leading or trailing whitespace from the Username and External ID fields when values are entered or saved. For example:
• [ ]johndoe → johndoe
• [ ]johndoe[ ] → johndoe
• johndoe[ ] → johndoe

Benefits
• Prevents login issues caused by accidental extra spaces.
• Reduces support tickets and troubleshooting steps for staff.
• Ensures greater data consistency across accounts.