add validate_param impls

Author: ItsDoot

crates/bevy_ecs/src/system/combinator.rs

@@ -395,6 +395,14 @@ where
         self.b.queue_deferred(world);
     }
 
+    unsafe fn validate_param_unsafe(&self, world: UnsafeWorldCell) -> bool {
+        self.a.validate_param_unsafe(world) && self.b.validate_param_unsafe(world)
+    }
+
+    fn validate_param(&mut self, world: &World) -> bool {
+        self.a.validate_param(world) && self.b.validate_param(world)
+    }
+
     fn initialize(&mut self, world: &mut World) {
         self.a.initialize(world);
         self.b.initialize(world);