Fix scythe not breaking items in an AOE (#4207)

Author: Ujhik

src/main/java/com/gregtechceu/gtceu/api/item/tool/GTToolType.java

@@ -113,6 +113,7 @@ public class GTToolType {
                     .durabilityMultiplier(3.0F)
                     .behaviors(AOEConfigUIBehavior.INSTANCE, GrassPathBehavior.INSTANCE,
                             DouseCampfireBehavior.INSTANCE))
+            .constructor(GTShovelItem::new)
             .toolClasses(GTToolType.SHOVEL)
             .defaultActions(ToolActions.SHOVEL_DIG)
             .materialAmount(3 * GTValues.M)

src/main/java/com/gregtechceu/gtceu/api/item/tool/ToolHelper.java

@@ -548,21 +548,26 @@ public static boolean removeBlockRoutine(@Nullable BlockState state, Level world
         return successful;
     }
 
+    /**
+     * Calculates the harvestable blocks, used for tool AoE harvesting
+     *
+     * @param player the player clicking the item
+     * @param stack  the item that was used
+     *
+     * @return listOfBlockPositions or empty list if none
+     */
     public static List<BlockPos> getHarvestableBlocks(ItemStack stack, Player player) {
-        if (!hasBehaviorsTag(stack)) return List.of();
+        final List<BlockPos> NO_BLOCKS = List.of();
+
+        if (!hasBehaviorsTag(stack)) return NO_BLOCKS;
 
         var aoeDefinition = getAoEDefinition(stack);
         if (aoeDefinition.isZero()) {
-            return List.of();
+            return NO_BLOCKS;
         }
 
+        InteractionHand hand = InteractionHand.MAIN_HAND;
         BlockHitResult hitResult = getPlayerDefaultRaytrace(player);
-        var toolType = player.getItemInHand(InteractionHand.MAIN_HAND).getItem() instanceof GTToolItem toolItem ?
-                toolItem.toolType : null;
-        if (toolType == null) return Collections.emptyList();
-        var hand = is(player.getItemInHand(InteractionHand.MAIN_HAND), toolType) ?
-                InteractionHand.MAIN_HAND : null;
-        if (hand == null) return Collections.emptyList();
         UseOnContext context = new UseOnContext(player, hand, hitResult);
         return getHarvestableBlocks(aoeDefinition, context);
     }