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, 1 insertions, 1 deletions

diff --git a/source/blender/editors/space_outliner/tree/tree_element_id.cc b/source/blender/editors/space_outliner/tree/tree_element_id.cc
index e126b024d52..64c73f57107 100644
--- a/source/blender/editors/space_outliner/tree/tree_element_id.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element_id.cc
@@ -34,7 +34,7 @@ std::unique_ptr<TreeElementID> TreeElementID::createFromID(TreeElement &legacy_t
       return std::make_unique<TreeElementIDScene>(legacy_te, (Scene &)id);
     case ID_OB:
     case ID_ME:
-    case ID_CU:
+    case ID_CU_LEGACY:
     case ID_MB:
     case ID_MA:
     case ID_TE: