Cleanup: Rename original curve object type enum

This commit renames enums related the "Curve" object type and ID type
to add `_LEGACY` to the end. The idea is to make our aspirations clearer
in the code and to avoid ambiguities between `CURVE` and `CURVES`.

Ref T95355

To summarize for the record, the plans are:
- In the short/medium term, replace the `Curve` object data type with
 `Curves`
- In the longer term (no immediate plans), use a proper data block for
  3D text and surfaces.

Differential Revision: https://developer.blender.org/D14114

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/anim_path.c b/source/blender/blenkernel/intern/anim_path.c
index 57f64d7a0f8..1f8c6df6147 100644
--- a/source/blender/blenkernel/intern/anim_path.c
+++ b/source/blender/blenkernel/intern/anim_path.c
@@ -55,7 +55,7 @@ float BKE_anim_path_get_length(const CurveCache *curve_cache)
 
 void BKE_anim_path_calc_data(Object *ob)
 {
-  if (ob == NULL || ob->type != OB_CURVE) {
+  if (ob == NULL || ob->type != OB_CURVES_LEGACY) {
     return;
   }
   if (ob->runtime.curve_cache == NULL) {
@@ -222,7 +222,7 @@ bool BKE_where_on_path(const Object *ob,
                        float *r_radius,
                        float *r_weight)
 {
-  if (ob == NULL || ob->type != OB_CURVE) {
+  if (ob == NULL || ob->type != OB_CURVES_LEGACY) {
     return false;
   }
   Curve *cu = ob->data;