Closes #45337

Release Notes:

- Fixed broken completion menu layout caused by trailing newlines in ty
documentation

<table>
  <tr>
    <td>Before</td>
    <td>After</td>
  </tr>
  <tr>
    <td>
<img width="756" height="875" alt="before"
src="https://github.com/user-attachments/assets/1d9da7d8-437a-4f03-8158-32ff1af9a428"
/>
    </td>
    <td>  
<img width="755" height="875" alt="after"
src="https://github.com/user-attachments/assets/dca31af3-e571-445a-b4a9-c300bb4c63fa"
/>
    </td>
  </tr>
</table>