Un-inline bitwise operation

osu.Framework/Graphics/Containers/LifetimeManagementContainer.cs

···
                 MakeChildAlive(d);
             unmanagedDrawablesToProcess.Clear();
 
-            return aliveChanged | manager.Update(Time.Current);
+            aliveChanged |= manager.Update(Time.Current);
+
+            return aliveChanged;
         }
 
         private void entryBecameAlive(LifetimeEntry entry) => MakeChildAlive(((DrawableLifetimeEntry)entry).Drawable);