[Bug] progress.stop without progress.start fails

[ericclemmons]

Environment

• OS: macOS
• Node Version: 24.5.0
• Package: @clack/prompts
• Package Version: `1.0.0-alpha.1

Describe the bug

progress.stop without progress.start has runtime error:

TypeError: $ is not a function
│      at Object.Z [as stop] (file:///Users/eric/Projects/testdriverai/monorepo/node_modules/.pnpm/@clack+prompts@1.0.0-alpha.1/node_modules/@clack/prompts/dist/index.mjs:65:9)

To Reproduce
Include a link to a minimal reproduction using node.new

https://stackblitz.com/edit/node-3qra3xfz?file=index.js

Expected behavior

Either throw because the progress bar hasn't started yet, or implicitly .start when .message is called.

A clear and concise description of what you expected to happen.