[Bug]: Test addon init should update framework in Next projects

[shilman]

Describe the bug

mkdir nextjs-test
cd nextjs-test
npx storybook@next init
npx storybook add @storybook/experimental-addon-test

The installer should prompt me about switching my framework to @storybook/experimental-nextjs-vite. Otherwise the CT UI won't show up in the testing module

Reproduction link

N/A

Reproduction steps

No response

System

any

Additional context

No response

[ndelangen]

So:

• modify the main.ts config
• install the new framework
• uninstall the old framework