### 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)
int r0 = p_rhs[0];
	int r1 = p_rhs[1];
	int r2 = p_rhs[2];
	if (r0 > r1) {
		SWAP(r0, r1);
	}
	if (r1 > r2) {
		SWAP(r1, r2);
	}
	if (r0 > r1) {
		SWAP(r0, r1);
	}
	int l0 = p_lhs[0];
	int l1 = p_lhs[1];
	int l2 = p_lhs[2];
	if (l0 > l1) {
		SWAP(l0, l1);
	}
	if (l1 > l2) {
		SWAP(l1, l2);
	}
	if (l0 > l1) {
		SWAP(l0, l1);
	}
	return l0 == r0 && l1 == r1 && l2 == r2;
}
void SurfaceTool::begin(Mesh::PrimitiveType p_primitive) {