Issue Summary

If a workspace is on UUM(users and groups are managed from admin hub), and if a group name has spaces, users from the group are not added as PR reviewers as per CODEOWNERS file.

Steps to Reproduce

1. Create a workspace group for Bitbucket in admin.atlassian.com with spaces in the group name. For example, "Test Group for PR Review"
2. create a CODEOWNERS file in the destination branch of the PR with the below content,

*    @"<workspaceID>/Test Group for PR Review"

Expected Results

The users from the group "Test Group for PR Review" are added as reviewers to the PR

Actual Results

None of the users from the group were added as reviewers

Workaround

The only workaround is to create/modify the group names used for PR reviews in CODEOWNERS file to something without spaces.