Have formatter insert newlines around multi-line expressions #8960

  module Details = {
    @react.component
    let make = (~input as {filePath}: input) => React.string(filePath)
  }
  module Body = {
    @react.component
    let make = (~input as {filePath, oldString, newString, replaceAll}: input) => <>
      <ToolView.Field label="file" value=filePath />
      <ToolView.Text
        label={replaceAll->Option.getOr(false) ? "replace all" : "replace"} text=oldString
      />
      {newString == ""
        ? <ToolView.Field label="with" value="(nothing)" />
        : <ToolView.Text label="with" text=newString />}
    </>
  }
  module Output = Tool.TextResult.Output
  let failed = Tool.TextResult.failed