Bug fixes

• [Live Proctoring] Fixed an issue where superusers can't assign proctors to students in a different institute[
• Live Proctoring] Fixed an issue where users whose role was changed to proctor from a different role couldn’t be assigned as proctor
• [Administration] Fixed an issue where a global proctor user can proctor a local proctoring session after the exam is switched from global to local proctoring
• [Exam Taker] Proctor Chat should only be shown for Live Proctoring exams
• [SSO] Fix an issue where an identity provider for SSO could not be deleted