Fix experience & improvements to block events (#8067)

This is a lot but basically adds a method to disable the dropping of experience and drops experience by default.
This way things that require XP to be dropped manually (via modification), they can drop XP themselves when needed but without touching anywhere else that may drop xp.

It should be noted this causes breakNaturally() to now drop experience.

patches/server/0126-ExperienceOrbs-API-for-Reason-Source-Triggering-play.patch

@@ -292,21 +292,21 @@ index 8d09c134058e55a23df4e23d965a7a783aed701e..45242f0ed5a0f98953df5f27fb76874d
  
                      world.levelEvent(1042, blockposition, 0);
 diff --git a/src/main/java/net/minecraft/world/level/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
-index 756a8ae14ffc46d6ebe0a858a03fb2e89b8e118a..bdf5443d5974d316b9b216291fadae4346a3123f 100644
+index 756a8ae14ffc46d6ebe0a858a03fb2e89b8e118a..89a62fbeeb78c864938a1cea84178478c6dc1b34 100644
 --- a/src/main/java/net/minecraft/world/level/block/Block.java
 +++ b/src/main/java/net/minecraft/world/level/block/Block.java
 @@ -369,8 +369,13 @@ public class Block extends BlockBehaviour implements ItemLike {
      }
  
      public void popExperience(ServerLevel world, BlockPos pos, int size) {
-+        // Paper start - add player parameter
++        // Paper start - add entity parameter
 +        popExperience(world, pos, size, null);
 +    }
-+    public void popExperience(ServerLevel world, BlockPos pos, int size, net.minecraft.server.level.ServerPlayer player) {
-+        // Paper end - add player parameter
++    public void popExperience(ServerLevel world, BlockPos pos, int size, net.minecraft.world.entity.Entity entity) {
++        // Paper end - add entity parameter
          if (world.getGameRules().getBoolean(GameRules.RULE_DOBLOCKDROPS)) {
 -            ExperienceOrb.award(world, Vec3.atCenterOf(pos), size);
-+            ExperienceOrb.award(world, Vec3.atCenterOf(pos), size, org.bukkit.entity.ExperienceOrb.SpawnReason.BLOCK_BREAK, player); // Paper
++            ExperienceOrb.award(world, Vec3.atCenterOf(pos), size, org.bukkit.entity.ExperienceOrb.SpawnReason.BLOCK_BREAK, entity); // Paper
          }
  
      }