feat(rome_js_formatter): Heuristic for fill arrays #3126

Align Rome's heuristic with Prettier's of when use `fill` vs a group. There's one difference that I intend not to fix because I believe it is a bug in Prettier. Rome's printer automatically inserts a `group` around `fill` elements so that `fits` returns `false` if it encounters any hard line break. Prettier doesn't do so and any hard line break will result in `fits` return true. This difference is meaningful for ```javascript [ // comment2 -380014, -253951682 ] ``` where the first element contains hard line breaks because of the `//comment`. Prettier assumes that the content fits and, thus, prints `-253...` on the same line. Rome does not and istead, prints a line break after `-3800..`. I can demonstrate that this leads to issues where Prettier incorrectly exceeds the line widths: [example](https://prettier.io/playground/#N4Igxg9gdgLgprEAuEBtAOlA9FgBJAWwIRgCZMBaAZgA4AGOgRgBYq32POvufe-+ANJVIBWKgE4RjAGw1yUXLgC6mEAJAQADjACW0AM7JQAQwBOpiAHcACmYSGUxgDaXjAT0PqARqeNgA1nAwAMrGxAAyOlBwyABmzvpw3r4BQcGaflEA5sgwpgCuSSBwBF5wACblFeHGUFn5xllwAGIQpgTGMLp1yCDG+TAQaiAAFjAETgDqIzrw+hlgcMH2szoAbrNuvWD6niBRiaYw1r5ZHXEJRQBW+gAewdlOcACK+RDwF06J6hmmh70wNyaOD6MCmHTaYaacGwSY6cowEbIeg-CyJSa+TS9aEguCmNYxdQARze8BOWgcIBxhwJw1McBJOnpJ0a5yQ8S+RUSBB0uQKXMeL1JMXZl3UMGMXjhCKRSFI4t8Oic2QAwhAiMZes4nMN8okACqShwc74gNaFACSUCqsGCYIhMAAgtbgoCnp9EgBfT1AA) ```javascript [ // comment2 -380014333333333333333333333333333333333333333333333333333333333333333333, -253951682 ] ```

Co-authored-by: Emanuele Stoppa <my.burning@gmail.com>

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