Fix Thokcha Ingot item id in enum

[claywar]

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• [x] I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• [x] I have read and understood the Contributing Guide and the Code of Conduct.
• [x] 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?

Both Thokcha Ingot and Ore had the same ID in item.lua enum (734, which is ore). Corrects Ingot ID to 735

Steps to test these changes

Currently unused, and no impact to gameplay currently