fix: Deleted workspace roles can not be used in Department Management

Created by: xuliwenwenwen

Signed-off-by: xuliwenwenwen liwenxu@yunify.com

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes: Fixes ##1876 (closed)

Special notes for reviewers:

Additional documentation, usage docs, etc.: