Fix sponge player uuid table corruption

src/mixins/java/org/spongepowered/common/mixin/core/world/level/storage/PrimaryLevelDataMixin.java

@@ -416,6 +416,7 @@ public abstract class PrimaryLevelDataMixin implements WorldData, PrimaryLevelDa
 
         final ListTag playerIdList = new ListTag();
         data.put(Constants.Sponge.SPONGE_PLAYER_UUID_TABLE, playerIdList);
+        this.impl$playerUniqueIdMap.values().forEach(uuid -> playerIdList.add(new IntArrayTag(SerializableUUID.uuidToIntArray(uuid))));
         this.impl$pendingUniqueIds.forEach(uuid -> playerIdList.add(new IntArrayTag(SerializableUUID.uuidToIntArray(uuid))));
         this.impl$pendingUniqueIds.clear();