This commit adds support for the curves object to the apply modifier operator. A warning is added when the evaluated result of the modifier doesn't contain any curves data. Differential Revision: https://developer.blender.org/D14730
Implementing removal of anonymous attributes with `GeometryComponent` instead of `Mesh` makes it more reusable for other types like curves.
This allows using C++ only APIs/data structures, and potentially simplifies adding support to apply modifiers for the Curves object.
