Core: Adds missing region to Sanction effect

[LoxleyXI]

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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?

Sanction is missing a ToAU region, causing crystals to drop from mobs around Nyzul Isle Staging Point with Signet and not with Sanction.

Steps to test these changes

Mobs in Alzadaal Undersea Ruins should only drop crystals if the player has Sanction and not if the player has Signet