Fix wrong ldap group deletion

[Lainow]

Checklist before requesting a review

Please delete options that are not relevant.

• [x] I have read the CONTRIBUTING document.
• [x] I have performed a self-review of my code.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [ ] This change requires a documentation update.

Description

• It fixes !36835
• Here is a brief description of what this PR does Fix accidental deletion of dynamic groups added by something other than rules

Screenshots (if appropriate):

[trasher]

Tests are failing