[CPP] Fix Random Deal crashing zone when used with trusts

[ampitere]

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• 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?

Currently while having trusts out in combat acting (casting/JA/etc.) then using Random Deal will cause the zone to crash. To resolve this issue we will add a check to ensure the recast packet is only sent for PCs.

Steps to test these changes

1. !changejob 17 99
2. Summon trusts
3. !immortal a mob and attack it
4. Use Random Deal while the trusts are attacking/using abilities
5. !reset if necessary