8da6bea073
* ATOM-16747 RPISystemInterface::GetDefaultScene returns the scene created by PreviewRenderer but not the Main Scene Deprecate GetDefaultScene() function. Update all the places which use GetDefaultScene to use Scene::GetFeatureProcessorFromEntityId or GetMainScene. Tested with Editor, UI Editor, Material Editor, game launcher. Signed-off-by: Qing Tao <55564570+VickyAtAZ@users.noreply.github.com>