use relevant util that I forgot existed

Signed-off-by: BT (calcastor/mame) <43831917+calcastor@users.noreply.github.com>

Author: calcastor

platform/platform-modern/src/main/java/tc/oc/pgm/platform/modern/impl/ModernNMSHacks.java

@@ -1,5 +1,6 @@
 package tc.oc.pgm.platform.modern.impl;
 
+import static tc.oc.pgm.util.bukkit.MiscUtils.MISC_UTILS;
 import static tc.oc.pgm.util.nms.Packets.ENTITIES;
 import static tc.oc.pgm.util.platform.Supports.Variant.PAPER;
 
@@ -8,8 +9,6 @@
 import io.papermc.paper.world.PaperWorldLoader;
 import io.papermc.paper.world.migration.WorldFolderMigration;
 import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.OptionalLong;
@@ -19,10 +18,7 @@
 import net.minecraft.core.Registry;
 import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.Registries;
-import net.minecraft.nbt.NbtAccounter;
-import net.minecraft.nbt.NbtIo;
 import net.minecraft.resources.ResourceKey;
-import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.TickTask;
 import net.minecraft.server.WorldLoader;
 import net.minecraft.server.dedicated.DedicatedServer;
@@ -228,7 +224,8 @@ public World createWorld(@NonNull WorldCreator creator) {
     }
 
     // PGM: We need to read data version from level.dat pre-migration
-    int dataVersion = readDataVersion(server.getWorldContainer().toPath().resolve(name));
+    int dataVersion = MISC_UTILS.getWorldDataVersion(
+        server.getWorldContainer().toPath().resolve(name).resolve("level.dat"));
 
     try {
       WorldFolderMigration.migrateApiWorld(
@@ -333,21 +330,6 @@ public World createWorld(@NonNull WorldCreator creator) {
     return serverLevel.getWorld();
   }
 
-  /**
-   * Read the {@code DataVersion} tag from a world folder's {@code level.dat}. Returns 0 on failure.
-   */
-  private static int readDataVersion(Path worldFolder) {
-    Path levelDat = worldFolder.resolve("level.dat");
-    if (!Files.exists(levelDat)) return 0;
-    try {
-      return NbtIo.readCompressed(levelDat, NbtAccounter.unlimitedHeap())
-          .getIntOr("DataVersion", 0);
-    } catch (IOException e) {
-      MinecraftServer.LOGGER.warn("Failed to read DataVersion from {}", levelDat, e);
-      return 0;
-    }
-  }
-
   @Override
   public boolean canMineBlock(BlockMaterialData blockMaterial, Player player) {
     return ((ModernBlockMaterialData) blockMaterial)