Reset spawner timer when spawner event is cancelled

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

@@ -40,7 +40,7 @@
              } else {
                  boolean flag = false;
                  RandomSource randomsource = world.getRandom();
-@@ -157,13 +164,25 @@
+@@ -157,13 +164,26 @@
                                  ((Mob) entity).finalizeSpawn(world, world.getCurrentDifficultyAt(entity.blockPosition()), EntitySpawnReason.SPAWNER, (SpawnGroupData) null);
                              }
  
@@ -59,6 +59,7 @@
  
 -                        if (!world.tryAddFreshEntityWithPassengers(entity)) {
 +                        entity.spawnedViaMobSpawner = true; // Paper
++                        flag = true; // Paper
 +                        // CraftBukkit start
 +                        if (org.bukkit.craftbukkit.event.CraftEventFactory.callSpawnerSpawnEvent(entity, pos).isCancelled()) {
 +                            continue;
@@ -68,3 +69,12 @@
                              this.delay(world, pos);
                              return;
                          }
+@@ -174,7 +194,7 @@
+                             ((Mob) entity).spawnAnim();
+                         }
+ 
+-                        flag = true;
++                        //flag = true; // Paper - moved up above cancellable event
+                     }
+                 }
+