apply buffers from the one off system (commands)

Author: mockersf

crates/bevy_ecs/src/system/commands.rs

@@ -430,6 +430,7 @@ impl Command for RunSystem {
     fn write(mut self: Box<Self>, world: &mut World) {
         self.system.initialize(world);
         self.system.run((), world);
+        self.system.apply_buffers(world);
     }
 }