459b4c7f00
`ui_draw_but_CURVE` used a flat color shader to draw points. This isn't valid as that shader doesn't support point rendering. This is fixed to replace the `GPU_SHADER_3D_FLAT_COLOR` with `GPU_SHADER_3D_POINT_VARYING_SIZE_VARYING_COLOR`. Regression found when loading `monster.blend` using Vulkan. This scene has the color management tab open with a custom curve. Pull Request: https://projects.blender.org/blender/blender/pulls/124025