Stops zinc gravel from showing as though it's a valid aluminium sub-soil.

[C0bra5]

Summary

This PR fixes a long-standing issue where NEI sometimes shows zinc gravel as a valid sub-soil for aluminium crops. This is because aluminium gravel somehow gets hit by postea while in NEI (meaning it gets nbt serialized and deserialized).

This PR accomplishes this goal by pushing up some cleanup and optimization work I was planning for 2.10, which allows me to effectively add an NEI-only blacklist when the NH core mod is installed. If a block of alu grave still remains in the world because it didn't get migrated (somehow), or because we disabled the transformer at some point and re-added alu grave to world generation (in case we forget to also yeet the special case from cropsnh when that happens).

Checklist

• I have tested this PR in DevEnv
• I have tested this PR in Fullpack
  • Daily 618
• This PR is in compliance with the GTNH AI Policy
  • No AI used

[C0bra5]

I'll throw this one back to a draft and mark it as feature-frozen because, honestly, 2.9 doesn't really need it. It would be nice to have more than anything else, and it does push some wider changes I originally planned for 2.9 that could probably be implemented better.