Fix hanging sign block validation. (#2328)
Update zh_cn for 1.21.4 (#2320)
* zh_cn lang update
* hotfix
Fixed a few missing/broken tags
Fixed hanging sign crashing on Fabric
Fixed boat crashing
Limit number of unique blockstates shown in anomalies to 500 (#2313)
* Limit number of unique blockstates shown in anomalies to 500
* Prevent theoretical crash if too few blocks exist
* Only use vanilla blocks in anomalies
Added missing localization strings for boats
