Fix wrong spawn reason for trial spawners (#11229)

patches/server/Entity-fromMobSpawner.patch

@@ -48,6 +48,18 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
                          // CraftBukkit start
                          if (org.bukkit.craftbukkit.event.CraftEventFactory.callSpawnerSpawnEvent(entity, pos).isCancelled()) {
                              continue;
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java b/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
+@@ -0,0 +0,0 @@ public final class TrialSpawner {
+                                 optional1.ifPresent(entityinsentient::equip);
+                             }
+ 
++                            entity.spawnedViaMobSpawner = true; // Paper
+                             // CraftBukkit start
+                             if (org.bukkit.craftbukkit.event.CraftEventFactory.callTrialSpawnerSpawnEvent(entity, pos).isCancelled()) {
+                                 return Optional.empty();
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java

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

@@ -201,6 +201,18 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
                  .isPresent();
      }
  
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java b/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/trialspawner/TrialSpawner.java
+@@ -0,0 +0,0 @@ public final class TrialSpawner {
+                             }
+ 
+                             entity.spawnedViaMobSpawner = true; // Paper
++                            entity.spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.TRIAL_SPAWNER; // Paper - Entity#getEntitySpawnReason
+                             // CraftBukkit start
+                             if (org.bukkit.craftbukkit.event.CraftEventFactory.callTrialSpawnerSpawnEvent(entity, pos).isCancelled()) {
+                                 return Optional.empty();
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java