Point's Display implementation doesn't respect formatter params

Normally, Rust data structures propagate formatter params recursively to individual values.

nalgebra does this too for matrices and vectors, but Points seem to ignore the formatter params.

Sample code:

```rust
let matrix = nalgebra::Matrix3::::new_random();
let vec = nalgebra::Vector3::::new_random();
let point = nalgebra::Point3::from(nalgebra::Vector3::::new_random());

println!("Matrix {matrix}");
println!("Vector {vec}");
println!("Point {point}");
println!("---");
println!("Matrix {matrix:.3}");
println!("Vector {vec:.3}");
println!("Point {point:.3}");
```

Output:

```
Matrix
┌ ┐
│ 0.8598913012304822 0.9260866371615168 0.46836528545042544 │
│ 0.6925437372908951 0.5359048989574623 0.3807341326886613 │
│ 0.6538521469022629 0.45065417326429935 0.46616147800849017 │
└ ┘

Vector
┌ ┐
│ 0.5324899032766206 │
│ 0.9758313347345605 │
│ 0.7908423868945029 │
└ ┘

Point {0.5597363785908459, 0.49737074839321604, 0.5159609296629915}
---
Matrix
┌ ┐
│ 0.860 0.926 0.468 │
│ 0.693 0.536 0.381 │
│ 0.654 0.451 0.466 │
└ ┘

Vector
┌ ┐
│ 0.532 │
│ 0.976 │
│ 0.791 │
└ ┘

Point {0.5597363785908459, 0.49737074839321604, 0.5159609296629915}
```