graphics: fix last provoking vertex on PS5

src/graphics/host_gpu/graphicContext.h

@@ -31,6 +31,7 @@ struct GraphicContext {
 	bool                               compute_subgroup_size_control_enabled = false;
 	bool                               sample_rate_shading_enabled           = false;
 	bool                               attachment_feedback_loop_enabled      = false;
+	bool                               provoking_vertex_last_enabled         = false;
 	bool                               supports_block_texel_view              = false;
 	bool                                      mesh_shader_enabled                   = false;
 	vk::PhysicalDeviceMeshShaderPropertiesEXT mesh_shader_properties                = {};