Sorting should respecing `keepLines` option from json formatter

[ngdangtu-vn]

Example:

A formatted json before run sorting:

{
    "editor.rulers": [ 70, 75 ],
    "css.format.braceStyle": "expand"
}

Result after run sorting:

{
    "css.format.braceStyle": "expand",
    "editor.rulers": [
        70,
        75
    ]
}

But I think what most people would expect is:

{
    "css.format.braceStyle": "expand",
    "editor.rulers": [ 70, 75 ]
}

In another word, it should not sort the content inside an array. What do you guys think?