Issue Summary

When adding group as restrictions in a calendar, we are seeing error "Invalid Group Name" in network tab.

It is identified as the issue occurs when the system attempts to resolve group names from our database. Specifically, the lookup is returning group names in uppercase, but the system is performing a case-sensitive comparison against the lowercase version. Because they don't match, the group name is incorrectly flagged as invalid.

Steps to Reproduce

1. Step 1: Open any space Calender
2. Step 2: Click on (...) beside calendar name -> Restrictions
3. Step 3: Add groupname and click apply
4. Step 4: No error

Expected Results

Group should be added as part of restriction

Actual Results

Group is not added and we see error in network logs

Invalid group name

Workaround

Create new groups