Lack of automatic indentation edge case in Gleam files

[JosephTLyons]

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• Completed

Describe the bug / provide steps to reproduce it

In most functions, Zed adds the correct indentation when putting the cursor after the { and adding a newline

fn write(file: File, text: String) {
| <- cursor here
  io.println("\"" <> text <> "\" -> " <> file.path)
}

However, for this edge case, indentation is not applied:

fn write_to_file(
  path: String,
  file_actions: fn(File) -> Nil,
) -> Result(Nil, Nil) {
| <- cursor here
  use file <- result.try(open_file(path))
  file_actions(file)
  close_file(file)
  Ok(Nil)
}

Something about the function signature being broken across multiple lines is problematic.