Non-admin User Should not be able to see all users/groups in drop down

Summary

In Plan configuration > Permissions > Plan access. Non-admin users can try to add Viewers and see all users/groups on the instance.

Steps to Reproduce

1. Login as non-admin user
2. Create a plan
3. Go to Plan configuration > permission
4. Try add users or groups

Expected Results

• Only groups that the user are belong to should be listed
• Only users that has "Browse Users" in Global Permission should be able to list all users

Actual Results

All users and groups are listed (max 50 on drop down)

Workaround

None