fix: block nbt population

[PierreSchwang]

Overview

Fixes #4552
Fixes #4708

Description

NBT format changed in the last few versions. Now uses the native methods "provided" by minecraft to set data via the original NBT data.

Submitter Checklist

• Make sure you are opening from a topic branch (/feature/fix/docs/ branch (right side)) and not your main branch.
• Ensure that the pull request title represents the desired changelog entry.
• New public fields and methods are annotated with @since TODO.
• I read and followed the contribution guidelines.

[PierreSchwang]

I've attempted to use the native NMS methods for loading and updating the block states, which seems to work partially.
Only tested in 1.21.8 with FAWE, so there are still quite a few tests left. The only thing I've noticed is, that signs don't seem to get their lines / info set. Containers (Chests, Lecterns), Banners, Skulls work perfectly.

Performance-wise it doesn't seem too bad. It'll be slower than the previous approach ig, but based on my testing the mean duration for a tile entity update (tag conversion, loading + updating) was roughly 500μs (lowest being like 50μs, and highest 10ms). I could do some additional benchmarks with the previous logic ig. But as it does not work 100% yet and is quite untested, I've not prioritized that high yet.

EDIT: Signs don't work because the methods applying the NBT data require the SignEntity to be related to a ServerLevel, which there isn't in WorldGen / block population. Will see how I can workaround that

[github-actions]

Please take a moment and address the merge conflicts of your pull request. Thanks!

[PierreSchwang]

I've tested with a few tile entities (and extensively with signs) - everything seems to work so far (except one thing on a spigot server, where some sign lines were just raw JSON - but I feel like the schematic is kinda broken). But I would appreciate further testing.