Fix: wrong identifier int for interpolate curves node

This does not break existing files, because the idname is the ground truth.

source/blender/blenkernel/BKE_node.h

@@ -1533,6 +1533,7 @@ void BKE_nodetree_remove_layer_n(struct bNodeTree *ntree, struct Scene *scene, i
 #define GEO_NODE_IMAGE_INFO 1189
 #define GEO_NODE_BLUR_ATTRIBUTE 1190
 #define GEO_NODE_IMAGE 1191
+#define GEO_NODE_INTERPOLATE_CURVES 1192
 
 /** \} */
 
@@ -1562,8 +1563,6 @@ void BKE_nodetree_remove_layer_n(struct bNodeTree *ntree, struct Scene *scene, i
 
 /** \} */
 
-#define GEO_NODE_INTERPOLATE_CURVES 2000
-
 void BKE_node_system_init(void);
 void BKE_node_system_exit(void);