Group Names in Repository Permissions are Displaying in Lowercase and being returned in Lowercase by the REST API endpoints

Summary

In the repository permissions page, if you add a group, this will be displayed in all lowercase in the UI, even though the group name may contain uppercase characters.

Steps to Reproduce

1. Create a group in Bitbucket Server in uppercase characters. (i.e. TEST)
2. Add this group as a repository permission to a repository.
3. It will display in all lowercase. (i.e. test)

Expected Results

The group name should be displayed in its correct case in the UI.

Actual Results

The group name is displayed in all lowercase.

Notes

This also affects the output of the REST API endpoints to retrieve the permissions at repository and project level.
Groups retrieved using the rest/api/1.0/admin/groups instead are not impacted.