rustfmt inserts newline between comment and `use` when both `reorder_imports` and `reorder_imports_in_group` is set to `true`

[topecongiro]

rustfmt.toml

reorder_imports = true
reorder_imports_in_group = true

input

// cmp
use std::cmp;
use std::cmp::{max, min, Ordering};

output

// cmp

use std::cmp;
use std::cmp::{max, min, Ordering};

[topecongiro]

Should reorder_imports_in_group regard comment as a separator?
For example, when given the following snippet,

use std::cmp::{max, min, Ordering};
// cmp
use std::cmp;

which output should we use?

1. Consider comment as a part of the following use and move the comment with it

// cmp
use std::cmp;
use std::cmp::{max, min, Ordering};

2. Consider comment as a separator

use std::cmp::{max, min, Ordering};
// cmp
use std::cmp;

[topecongiro]

Closing since this was a dup of #1373.