Fixes a couple issues with entity spawn reasons (#8390)

patches/api/Fix-upstream-javadocs.patch

@@ -174,6 +174,20 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
       * @param sz The new size of the slime.
       */
      public void setSize(int sz);
+diff --git a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
++++ b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+@@ -0,0 +0,0 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
+          */
+         SHEARED,
+         /**
+-         * When eg an effect cloud is spawned as a result of a creeper exploding
++         * When an entity is spawned as a result of an explosion. Like an area effect cloud from
++         * a creeper or a dragon fireball.
+          */
+         EXPLOSION,
+         /**
 diff --git a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java b/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java

patches/server/Fixes-and-additions-to-the-SpawnReason-API.patch

@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sun, 25 Sep 2022 11:21:01 -0700
+Subject: [PATCH] Fixes and additions to the SpawnReason API
+
+Fixes some wrong reasons, and adds missing spawn reasons for entities.
+
+Co-authored-by: Doc <nachito94@msn.com>
+
+diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/entity/EntityType.java
++++ b/src/main/java/net/minecraft/world/entity/EntityType.java
+@@ -0,0 +0,0 @@ public class EntityType<T extends Entity> implements EntityTypeTest<Entity, T> {
+     @Nullable
+     public T spawn(ServerLevel world, @Nullable CompoundTag itemNbt, @Nullable Component name, @Nullable Player player, BlockPos pos, MobSpawnType spawnReason, boolean alignPosition, boolean invertY) {
+         // CraftBukkit start
+-        return this.spawn(world, itemNbt, name, player, pos, spawnReason, alignPosition, invertY, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER_EGG);
++        return this.spawn(world, itemNbt, name, player, pos, spawnReason, alignPosition, invertY, spawnReason == MobSpawnType.DISPENSER ? org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DISPENSE_EGG : org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER_EGG); // Paper - use correct spawn reason for dispenser spawn eggs
+     }
+ 
+     @Nullable
+diff --git a/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java b/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
++++ b/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
+@@ -0,0 +0,0 @@ public class DragonFireball extends AbstractHurtingProjectile {
+ 
+                 if (new com.destroystokyo.paper.event.entity.EnderDragonFireballHitEvent((org.bukkit.entity.DragonFireball) this.getBukkitEntity(), list.stream().map(LivingEntity::getBukkitLivingEntity).collect(java.util.stream.Collectors.toList()), (org.bukkit.entity.AreaEffectCloud) areaEffectCloud.getBukkitEntity()).callEvent()) { // Paper
+                 this.level.levelEvent(2006, this.blockPosition(), this.isSilent() ? -1 : 1);
+-                this.level.addFreshEntity(areaEffectCloud);
++                this.level.addFreshEntity(areaEffectCloud, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.EXPLOSION); // Paper
+                 } else areaEffectCloud.discard(); // Paper
+                 this.discard();
+             }
+diff --git a/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java b/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
+@@ -0,0 +0,0 @@ public class FrogspawnBlock extends Block {
+             int k = random.nextInt(1, 361);
+             tadpole.moveTo(d, (double)pos.getY() - 0.5D, e, (float)k, 0.0F);
+             tadpole.setPersistenceRequired();
+-            world.addFreshEntity(tadpole);
++            world.addFreshEntity(tadpole, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.EGG); // Paper
+         }
+ 
+     }