[BUG] Mobile Browser enter should input new line instead of submit prompt

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

There's a bug regression with the new "try it out" Claude code in mobile browsers. since a user can't shift-enter on mobile to input a new line, a regular enter on mobile should input a new line instead of auto submitting the prompt.

What Should Happen?

a regular enter on mobile should input a new line instead of auto submitting the prompt

Error Messages/Logs

Steps to Reproduce

1. Open Claude code in mobile browser
2. Type a prompt
3. Attempt to input a new line in the prompt via keyboard enter key
4. see that the prompt auto submits instead of inputting the new line

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

clause code website

Platform

Other

Operating System

Other

Terminal/Shell

Other

Additional Information

_No response_