HueLight is now HueGroup and uses a scene to turn the light on, the contact sensor will also not override the current light state if it is already on

src/devices/contact_sensor.rs

@@ -167,7 +167,13 @@ impl OnMqtt for ContactSensor {
                     let mut light = light.write().await;
                     if let Some(light) = As::<dyn OnOff>::cast_mut(light.as_mut()) {
                         *previous = light.is_on().await.unwrap();
-                        light.set_on(true).await.ok();
+                        // Only turn the light on when it is currently off
+                        // This is done such that if the light is on but dimmed for example it
+                        // won't suddenly blast at full brightness but instead retain the current
+                        // state
+                        if !*previous {
+                            light.set_on(true).await.ok();
+                        }
                     }
                 }
             } else {