Update Celestial Nexus mobs from March 2024 Shift

[claywar]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

All defined mobs shifted in the March Update from within Celestial Nexus. This adjusts bcnm_battlefield and mob spawn points table to reflect the necessary changes.

Steps to test these changes

Enter battlefield, and don't see this: