Revert DamageSource#getCausingEntity to vanilla

patches/server/0951-Fix-DamageSource-API.patch

@@ -175,7 +175,7 @@ index 60eac9df10a9a395a1568925515d010eb51a64e5..55fd997a4e894eeab24de269d59e4861
  
              if (flag && entity instanceof LivingEntity entityliving) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
-index 5572c50cac4968e3ec75fe1fc98442407bc3b905..3c5e937ade4bbf6a2f5f123ce53001eb915d51eb 100644
+index 5572c50cac4968e3ec75fe1fc98442407bc3b905..7df86e7124a9ed359f05324b8fc4c8862f7e4b79 100644
 --- a/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
 +++ b/src/main/java/org/bukkit/craftbukkit/damage/CraftDamageSource.java
 @@ -41,13 +41,13 @@ public class CraftDamageSource implements DamageSource {
@@ -183,7 +183,7 @@ index 5572c50cac4968e3ec75fe1fc98442407bc3b905..3c5e937ade4bbf6a2f5f123ce53001eb
      @Override
      public org.bukkit.entity.Entity getCausingEntity() {
 -        net.minecraft.world.entity.Entity entity = this.getHandle().getCausingDamager();
-+        net.minecraft.world.entity.Entity entity = this.getHandle().getCustomEventDamager(); // Paper
++        net.minecraft.world.entity.Entity entity = this.getHandle().getEntity(); // Paper - fix DamageSource API - revert to vanilla
          return (entity != null) ? entity.getBukkitEntity() : null;
      }