Remove transitive mesh.h, rendering_server.h and shader.h includes from node.h.

scene/animation/animation_blend_tree.h

@@ -31,6 +31,7 @@
 #pragma once
 
 #include "scene/animation/animation_tree.h"
+#include "scene/resources/curve.h"
 
 class AnimationNodeAnimation : public AnimationRootNode {
 	GDCLASS(AnimationNodeAnimation, AnimationRootNode);

scene/animation/animation_node_state_machine.h

@@ -32,6 +32,7 @@
 
 #include "core/math/expression.h"
 #include "scene/animation/animation_tree.h"
+#include "scene/resources/curve.h"
 
 class AnimationNodeStateMachineTransition : public Resource {
 	GDCLASS(AnimationNodeStateMachineTransition, Resource);