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/vfont.c b/source/blender/blenkernel/intern/vfont.c
index cb5e351e78a..5f1bb7db231 100644
--- a/source/blender/blenkernel/intern/vfont.c
+++ b/source/blender/blenkernel/intern/vfont.c
@@ -1302,8 +1302,8 @@ static bool vfont_to_curve(Object *ob,
   MEM_freeN(i_textbox_array);
 
   /* TEXT ON CURVE */
-  /* NOTE: Only OB_CURVE objects could have a path. */
-  if (cu->textoncurve && cu->textoncurve->type == OB_CURVE) {
+  /* NOTE: Only OB_CURVES_LEGACY objects could have a path. */
+  if (cu->textoncurve && cu->textoncurve->type == OB_CURVES_LEGACY) {
     BLI_assert(cu->textoncurve->runtime.curve_cache != NULL);
     if (cu->textoncurve->runtime.curve_cache != NULL &&
         cu->textoncurve->runtime.curve_cache->anim_path_accum_length != NULL) {