Viewport receives keystrokes from textarea

[rchaganti]

Describe the bug
When combining viewport and textarea, and when textarea is in focus, typing characters like b and d, scrolls the viewport content.

Setup

• OS : Windows 11/WSL 2
• bash

To Reproduce
Run the example: https://github.com/charmbracelet/bubbletea/tree/master/examples/chat

Expected behavior
When textarea is in focus, the keystrokes such as b and d should not be sent to the viewport.

[meowgorithm]

Good call. We've fixed this and cleaned up the example all around. Thanks for raising this issue!

[rchaganti]

The changes in the example prevent keys being routed to the viewport. However, it removes the functionality of viewport scrolling. @meowgorithm