fix(oxTrust): User searching is case sensitive for Postgres

[mmrraju]

Describe the issue

Ticket-11961

If we go to Users->Manage People and try searching for users, this is case sensitive where LDAP searching is case insensitive.

Screenshots

https://github.com/user-attachments/assets/9c9104e5-1373-41a4-8ee7-4eee1bacdb1f

Desktop (please complete the following information):

• OS: [e.g. Ubuntu16.04LTS]
• Gluu version(4.5.5)