Allow non-admins to access group personal collections

Nobody has claimed this yet.

**Is your feature request related to a problem? Please describe.**
There's a feature request from a customer that needs to get into personal collections to know what the users are building to help them, but this user is not an admin.

**Describe the solution you'd like**
A permission to get into the personal collection of the same users in the group

**Describe alternatives you've considered**
None

**How important is this feature to you?**
Requested by a customer

**Additional context**
NA

The issue requests a new permission allowing non-admin group members to access other users' personal collections. No files, tests, entry points, or implementation details are identified, so first clarify the permission's scope and intended behavior before locating the relevant authorization and collection code. Done means the permission is defined, enforced, and covered by tests.

Written by the indexing model from the issue text.