Fmt removes newlines on top scopes

**Problem**

Running `dx fmt --all-code` the new lines that separate the top level blocks get deleted. It's not a critical issue but can be annoying.

```rust
use dioxus_logger::tracing;
fn main() {
dioxus_logger::init(tracing::Level::INFO).expect("failed to init logger");
tracing::info!("starting app");
launch(App);
}
fn App() -> Element {
//...
}
#[server(PostServerData)]
async fn post_server_data(data: String) -> Result {
//...
}
```

**Steps To Reproduce**

Steps to reproduce the behavior:

- Generate a new fullstack app
- Insure between the `main`, `App` and ` post_server_data` functions and the last `use` there is a new line
- Run `dx fmt --all-code`

**Expected behavior**

The new line should stay between the functions like this

```rust
use dioxus_logger::tracing;

fn main() {
dioxus_logger::init(tracing::Level::INFO).expect("failed to init logger");
tracing::info!("starting app");
launch(App);
}

fn App() -> Element {
//...
}

#[server(PostServerData)]
async fn post_server_data(data: String) -> Result {
//...
}
```

**Environment:**
- Dioxus version: 0.5.7
- Rust version: 1.81
- OS info: MacOS Intel
- App platform: Fullstack

**Questionnaire**
- [x] I'm interested in fixing this myself but don't know where to start
- [ ] I would like to fix and I have a solution
- [x] I don't have time to fix this right now, but maybe later

Start by generating a fullstack app and running `dx fmt --all-code` on Rust code with blank lines between the `use`, `main`, `App`, and `post_server_data` items. Trace the formatter entry point used by this command and verify that the blank lines remain after formatting.

Written by the indexing model from the issue text.