Fix event transform in SubViewportContainer

The transform does not take the canvas transform into account.

scene/gui/subviewport_container.cpp

@@ -176,7 +176,7 @@ void SubViewportContainer::input(const Ref<InputEvent> &p_event) {
 		return;
 	}
 
-	Transform2D xform = get_global_transform();
+	Transform2D xform = get_global_transform_with_canvas();
 
 	if (stretch) {
 		Transform2D scale_xf;
@@ -203,7 +203,7 @@ void SubViewportContainer::unhandled_input(const Ref<InputEvent> &p_event) {
 		return;
 	}
 
-	Transform2D xform = get_global_transform();
+	Transform2D xform = get_global_transform_with_canvas();
 
 	if (stretch) {
 		Transform2D scale_xf;