### Godot version

4.1 RC3

### System information

Windows 11 AMD Ryzen 5950x

### Issue description

Actually should be pretty simple, as of commit: https://github.com/godotengine/godot/commit/1c93606e470f0cad5f14af104ccb89a95a89931c

SurfaceTool's add_triangle_fan() maps its parameters like so:
`add_triangle_fan(p_vertices, p_uv2s, p_colors, p_uv2s, p_normals, Variant(p_tangents));`

As you can see its using **p_uv2s** as the 2nd _and_ 4th parameters, and isn't using **p_uvs** at all which ought to be the 2nd parameter. The 2nd parameter at the moment does nothing at all.

As a result I had to change my code from:
`surface_tool.add_triangle_fan(vertices, [uvs[0], uvs[1], uvs[2], uvs[1], uvs[3], uvs[2]])`
To:
`surface_tool.add_triangle_fan(vertices, [], [], [uvs[0], uvs[1], uvs[2], uvs[1], uvs[3], uvs[2]])`

### Steps to reproduce

Use add_triangle_fan and place your UVs as the 2nd parameter, your mesh will be black. When you change your uvs to the 4th parameter, it correctly maps.

### Minimal reproduction project

Should be trivial to reproduce (and to see why it's broken in this commit)
ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::create_from() must be a valid object of type Mesh");
	clear();
	primitive = p_existing->surface_get_primitive_type(p_surface);
	_create_list(p_existing, p_surface, &vertex_array, &index_array, format);
	material = p_existing->surface_get_material(p_surface);
	for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
		if (format & custom_mask[j]) {
			last_custom_format[j] = (CustomFormat)((format >> custom_shift[j]) & RS::ARRAY_FORMAT_CUSTOM_MASK);
		}
	}
}
void SurfaceTool::create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name) {
	ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::create_from_blend_shape() must be a valid object of type Mesh");
	clear();
	primitive = p_existing->surface_get_primitive_type(p_surface);
	Array arr = p_existing->surface_get_blend_shape_arrays(p_surface);
	Array blend_shape_names;
	int32_t shape_idx = -1;
	for (int32_t i = 0; i < p_existing->get_blend_shape_count(); i++) {
		String name = p_existing->get_blend_shape_name(i);
		if (name == p_blend_shape_name) {
			shape_idx = i;
			break;
		}
	}
	ERR_FAIL_COND(shape_idx == -1);
	ERR_FAIL_COND(shape_idx >= arr.size());
	Array blendshape_mesh_arrays = arr[shape_idx];