Properly handle experience dropping on block break

This causes spawnAfterBreak to spawn xp by default, removing the need to manually add xp wherever this method is used.
For classes that use custom xp amounts, they can drop the resources with disabling

paper-server/patches/sources/net/minecraft/world/level/Level.java.patch

@@ -303,7 +303,7 @@
  
 +    // Paper start - if loaded
      @Nullable
-+    @Override
+     @Override
 +    public final ChunkAccess getChunkIfLoadedImmediately(int x, int z) {
 +        return ((ServerLevel)this).chunkSource.getChunkAtIfLoadedImmediately(x, z);
 +    }
@@ -356,7 +356,7 @@
 +        return getWorldBorder().isWithinBounds(blockposition) ? getBlockStateIfLoaded(blockposition) : null;
 +    }
 +
-     @Override
++    @Override
      public ChunkAccess getChunk(int chunkX, int chunkZ, ChunkStatus leastStatus, boolean create) {
 +        // Paper end
          ChunkAccess ichunkaccess = this.getChunkSource().getChunk(chunkX, chunkZ, leastStatus, create);
@@ -523,7 +523,7 @@
      public void onBlockStateChange(BlockPos pos, BlockState oldBlock, BlockState newBlock) {}
  
      @Override
-@@ -270,9 +591,26 @@
+@@ -270,15 +591,33 @@
              return false;
          } else {
              FluidState fluid = this.getFluidState(pos);
@@ -552,7 +552,15 @@
              }
  
              if (drop) {
-@@ -340,10 +678,18 @@
+                 BlockEntity tileentity = iblockdata.hasBlockEntity() ? this.getBlockEntity(pos) : null;
+ 
+-                Block.dropResources(iblockdata, this, pos, tileentity, breakingEntity, ItemStack.EMPTY);
++                Block.dropResources(iblockdata, this, pos, tileentity, breakingEntity, ItemStack.EMPTY, false); // Paper - Properly handle xp dropping
++                iblockdata.getBlock().popExperience((ServerLevel) this, pos, xp, breakingEntity); // Paper - Properly handle xp dropping; custom amount
+             }
+ 
+             boolean flag1 = this.setBlock(pos, fluid.createLegacyBlock(), 3, maxUpdateDepth);
+@@ -340,10 +679,18 @@
  
      @Override
      public BlockState getBlockState(BlockPos pos) {
@@ -572,7 +580,7 @@
  
              return chunk.getBlockState(pos);
          }
-@@ -446,34 +792,53 @@
+@@ -446,34 +793,53 @@
              this.pendingBlockEntityTickers.clear();
          }
  
@@ -624,26 +632,26 @@
 +            entity.discard(org.bukkit.event.entity.EntityRemoveEvent.Cause.DISCARD);
 +            // Paper end - Prevent block entity and entity crashes
          }
-+    }
+     }
 +    // Paper start - Option to prevent armor stands from doing entity lookups
 +    @Override
 +    public boolean noCollision(@Nullable Entity entity, AABB box) {
 +        if (entity instanceof net.minecraft.world.entity.decoration.ArmorStand && !entity.level().paperConfig().entities.armorStands.doCollisionEntityLookups) return false;
 +        return LevelAccessor.super.noCollision(entity, box);
-     }
++    }
 +    // Paper end - Option to prevent armor stands from doing entity lookups
  
      public boolean shouldTickDeath(Entity entity) {
          return true;
-@@ -510,13 +875,32 @@
+@@ -510,13 +876,32 @@
      @Nullable
      @Override
      public BlockEntity getBlockEntity(BlockPos pos) {
 -        return this.isOutsideBuildHeight(pos) ? null : (!this.isClientSide && Thread.currentThread() != this.thread ? null : this.getChunkAt(pos).getBlockEntity(pos, LevelChunk.EntityCreationType.IMMEDIATE));
 +        // CraftBukkit start
 +        return this.getBlockEntity(pos, true);
-+    }
-+
+     }
+ 
 +    @Nullable
 +    public BlockEntity getBlockEntity(BlockPos blockposition, boolean validate) {
 +        // Paper start - Perf: Optimize capturedTileEntities lookup
@@ -654,8 +662,8 @@
 +        // Paper end - Perf: Optimize capturedTileEntities lookup
 +        // CraftBukkit end
 +        return this.isOutsideBuildHeight(blockposition) ? null : (!this.isClientSide && Thread.currentThread() != this.thread ? null : this.getChunkAt(blockposition).getBlockEntity(blockposition, LevelChunk.EntityCreationType.IMMEDIATE));
-     }
- 
++    }
++
      public void setBlockEntity(BlockEntity blockEntity) {
          BlockPos blockposition = blockEntity.getBlockPos();
  
@@ -669,7 +677,7 @@
              this.getChunkAt(blockposition).addAndRegisterBlockEntity(blockEntity);
          }
      }
-@@ -643,7 +1027,7 @@
+@@ -643,7 +1028,7 @@
  
                  for (int k = 0; k < j; ++k) {
                      EnderDragonPart entitycomplexpart = aentitycomplexpart[k];
@@ -678,7 +686,7 @@
  
                      if (t0 != null && predicate.test(t0)) {
                          result.add(t0);
-@@ -912,7 +1296,7 @@
+@@ -912,7 +1297,7 @@
  
      public static enum ExplosionInteraction implements StringRepresentable {