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/editors/space_outliner/outliner_tools.cc b/source/blender/editors/space_outliner/outliner_tools.cc
index 18c37e08eff..53a81cf161e 100644
--- a/source/blender/editors/space_outliner/outliner_tools.cc
+++ b/source/blender/editors/space_outliner/outliner_tools.cc
@@ -117,7 +117,7 @@ static void get_element_operation_type(
           break;
 
         case ID_ME:
-        case ID_CU:
+        case ID_CU_LEGACY:
         case ID_MB:
         case ID_LT:
         case ID_LA:
@@ -236,7 +236,7 @@ static void unlink_material_fn(bContext *UNUSED(C),
     totcol = me->totcol;
     matar = me->mat;
   }
-  else if (GS(tsep->id->name) == ID_CU) {
+  else if (GS(tsep->id->name) == ID_CU_LEGACY) {
     Curve *cu = (Curve *)tsep->id;
     totcol = cu->totcol;
     matar = cu->mat;