Fix templates errors pre-1.21.6

Signed-off-by: Irmo van den Berge <irmo.vandenberge@ziggo.nl>

src/main/generated/com/bergerkiller/generated/net/minecraft/util/ProblemReporterHandle.java

@@ -7,6 +7,7 @@ import com.bergerkiller.mountiplex.reflection.declarations.Template;
  * To access members without creating a handle type, use the static {@link #T} member.
  * New handles can be created from raw instances using {@link #createHandle(Object)}.
  */
+@Template.Optional
 @Template.InstanceType("net.minecraft.util.ProblemReporter")
 public abstract class ProblemReporterHandle extends Template.Handle {
     /** @see ProblemReporterClass */

src/main/templates/com/bergerkiller/templates/net/minecraft/util_problemreporter.txt

@@ -3,7 +3,7 @@ package net.minecraft.util;
 import com.bergerkiller.generated.net.minecraft.util.ProblemReporterHandle;
 
 // Since 1.21.6
-class ProblemReporter {
+optional class ProblemReporter {
 
     public static (ProblemReporterHandle) ProblemReporter createScoped() {
         // Global macro

src/main/templates/com/bergerkiller/templates/net/minecraft/world/level_storage_valueinputoutput.txt

@@ -29,19 +29,21 @@ class ValueInput {
 #endif
     }
 
-    public static (ValueInputHandle) ValueInput forNBTOnWorld((Object) ProblemReporter problemreporter, (org.bukkit.World) net.minecraft.world.level.World world, (CommonTagCompound) NBTTagCompound nbttagcompound) {
 #if version >= 1.21.6
+    public static (ValueInputHandle) ValueInput forNBTOnWorld((Object) ProblemReporter problemreporter, (org.bukkit.World) net.minecraft.world.level.World world, (CommonTagCompound) NBTTagCompound nbttagcompound) {
         return TagValueInput.create(problemreporter, world.registryAccess(), nbttagcompound);
-#else
-        return nbttagcompound;
-#endif
     }
 
     public static (ValueInputHandle) ValueInput forNBT((Object) ProblemReporter problemreporter, (Object) HolderLookup.a holderLookup, (CommonTagCompound) NBTTagCompound nbttagcompound) {
-#if version >= 1.21.6
         return TagValueInput.create(problemreporter, holderLookup, nbttagcompound);
-#else
-        return nbttagcompound;
-#endif
     }
+#else
+    public static (ValueInputHandle) ValueInput forNBTOnWorld((Object) Object problemreporter, (org.bukkit.World) Object world, (CommonTagCompound) Object nbttagcompound) {
+        return nbttagcompound;
+    }
+
+    public static (ValueInputHandle) ValueInput forNBT((Object) Object problemreporter, (Object) Object holderLookup, (CommonTagCompound) Object nbttagcompound) {
+        return nbttagcompound;
+    }
+#endif
 }