Closes #43991 trim documentation string to prevent completion overlap previous [Screencast from 2025-12-16 14-55-58.webm](https://github.com/user-attachments/assets/d7674d82-63b0-4a85-a90f-b5c5091e4a82) after change [Screencast from 2025-12-16 14-50-05.webm](https://github.com/user-attachments/assets/109c22b5-3fff-49c8-a2ec-b1af467d6320) Release Notes: - Fixed an issue where completions in the completion menu would span multiple lines.