Fix WorldEditWrapper not loading schematics in 1.21

SpigotCore/SpigotCore_8/src/de/steamwar/core/WorldEditWrapper8.java

@@ -22,7 +22,10 @@ package de.steamwar.core;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Maps;
 import com.sk89q.jnbt.*;
-import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.BlockVector;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.extension.input.ParserContext;
@@ -57,22 +60,25 @@ public class WorldEditWrapper8 implements WorldEditWrapper {
     }
 
     @Override
-    public void setPlayerClipboard(Player player, InputStream is, NodeData.SchematicFormat schemFormat) {
+    public void setPlayerClipboard(Player player, Clipboard clipboard) {
         WorldData world = new BukkitWorld(player.getWorld()).getWorldData();
-        Clipboard clipboard;
-        try {
-            clipboard = getClipboard(is, schemFormat);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-
         Actor actor = WorldEditWrapper.getWorldEditPlugin().wrapCommandSender(player);
         WorldEditWrapper.getWorldEditPlugin().getWorldEdit().getSessionManager().get(actor).setClipboard(new ClipboardHolder(clipboard, world));
     }
 
     @Override
-    public Clipboard getClipboard(InputStream is, NodeData.SchematicFormat schemFormat) throws IOException {
-        switch (schemFormat) {
+    public Clipboard getClipboard(NodeData data) throws IOException {
+        InputStream is = data.schemData(true);
+        return readClipboard(is, data.getNodeFormat());
+    }
+
+    @Override
+    public Clipboard getClipboard(InputStream inputStream) throws IOException {
+        return readClipboard(inputStream, getNativeFormat());
+    }
+
+    private Clipboard readClipboard(InputStream is, NodeData.SchematicFormat format) throws IOException {
+        switch (format) {
             case MCEDIT:
                 return new SchematicReader(new NBTInputStream(is)).read(WorldEdit.getInstance().getServer().getWorlds().get(0).getWorldData());
             case SPONGE_V2: