Improve painting performance

these really shouldn't hit the CPU at all considering they are simply static objects ...

src/entity/Entity.php

@@ -998,6 +998,14 @@ abstract class Entity{
 		$this->scheduleUpdate();
 	}
 
+	/**
+	 * Called when a random update is performed on the chunk the entity is in. This happens when the chunk is within the
+	 * ticking chunk range of a player (or chunk loader).
+	 */
+	public function onRandomUpdate() : void{
+		$this->scheduleUpdate();
+	}
+
 	/**
 	 * Flags the entity as needing a movement update on the next tick. Setting this forces a movement update even if the
 	 * entity's motion is zero. Used to trigger movement updates when blocks change near entities.

src/entity/object/Painting.php

@@ -132,6 +132,10 @@ class Painting extends Entity{
 		}
 	}
 
+	public function onRandomUpdate() : void{
+		//NOOP
+	}
+
 	public function hasMovementUpdate() : bool{
 		return false;
 	}

src/world/World.php

@@ -968,7 +968,7 @@ class World implements ChunkManager{
 
 			$chunk = $this->chunks[$index];
 			foreach($chunk->getEntities() as $entity){
-				$entity->scheduleUpdate();
+				$entity->onRandomUpdate();
 			}
 
 			foreach($chunk->getSubChunks() as $Y => $subChunk){