Force code actions to be single line (#21409)

Addresses #21403 partially. Is consistent with the behaviour in VSCode

Before:
<img width="332" alt="391571084-1bef4ef9-b8f5-4c8f-9a32-9c0ab6c91af1"
src="https://github.com/user-attachments/assets/d4d83826-23a1-43a1-94f9-feb0b0ddd5ce">

After:
<img width="330" alt="Screenshot 2024-12-02 at 18 35 11"
src="https://github.com/user-attachments/assets/c04f0494-4f34-476a-a090-1443d61851e5">

Release Notes:

- Fixed an issue with multiline code actions' rendering by forcing them
to be single line