allow disabling scheduled chunk checks

Author: xGinko

AnarchyExploitFixesFolia/src/main/java/me/xginko/aef/modules/chunklimits/CustomEntityLimit.java

@@ -154,14 +154,17 @@ public CustomEntityLimit() {
     @Override
     public void enable() {
         plugin.getServer().getPluginManager().registerEvents(this, plugin);
-        scheduledTask = plugin.getServer().getGlobalRegionScheduler()
+        if (checkPeriod > 0) scheduledTask = plugin.getServer().getGlobalRegionScheduler()
                 .runAtFixedRate(plugin, this, checkPeriod, checkPeriod);
     }
 
     @Override
     public void disable() {
         HandlerList.unregisterAll(this);
-        if (scheduledTask != null) scheduledTask.cancel();
+        if (scheduledTask != null) {
+            scheduledTask.cancel();
+            scheduledTask = null;
+        }
     }
 
     private void enforceEntityLimit(Map<EntityType, List<Entity>> entitiesByTypes) {

AnarchyExploitFixesLegacy/src/main/java/me/xginko/aef/modules/chunklimits/CustomEntityLimit.java

@@ -142,7 +142,8 @@ public CustomEntityLimit() {
     @Override
     public void enable() {
         plugin.getServer().getPluginManager().registerEvents(this, plugin);
-        bukkitTask = plugin.getServer().getScheduler().runTaskTimer(plugin, this, checkPeriod, checkPeriod);
+        if (checkPeriod > 0) bukkitTask = plugin.getServer().getScheduler()
+                .runTaskTimer(plugin, this, checkPeriod, checkPeriod);
     }
 
     @Override