### 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)
if (index_array.size() == 0) {
		return; 
	}
	LocalVector<Vertex> old_vertex_array = vertex_array;
	vertex_array.clear();
	for (const int &index : index_array) {
		ERR_FAIL_COND(uint32_t(index) >= old_vertex_array.size());
		vertex_array.push_back(old_vertex_array[index]);
	}
	format &= ~Mesh::ARRAY_FORMAT_INDEX;
	index_array.clear();
}
void SurfaceTool::_create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat) {
	ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::_create_list() must be a valid object of type Mesh");
	Array arr = p_existing->surface_get_arrays(p_surface);
	ERR_FAIL_COND(arr.size() != RS::ARRAY_MAX);
	_create_list_from_arrays(arr, r_vertex, r_index, lformat);
}
const uint32_t SurfaceTool::custom_mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
const uint32_t SurfaceTool::custom_shift[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM1_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM2_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM3_SHIFT };
void SurfaceTool::create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<SurfaceTool::Vertex> &ret, uint32_t *r_format) {