[Bug] Autocomplete crash when `initialValue` is used

[colinaaa]

Environment

• OS: macOS
• Node Version: v22.15.1
• Package: @clack/prompts
• Package Version: v1.0.0-alpha.0

Describe the bug

When initialValue is set, the prompts would crash with error: "TypeError: t.toLowerCase is not a function".

        const result = await p.autocomplete({
		message: 'Select a country',
		options: countries,
		placeholder: 'Type to search countries...',
		maxItems: 8,
+  	        initialValue: 'us',
	});

I think it's from one of these:

clack/packages/prompts/src/autocomplete.ts

Lines 24 to 27 in f90f47d

	const label = (option.label ?? String(option.value ?? '')).toLowerCase();
	const hint = (option.hint ?? '').toLowerCase();
	const value = String(option.value).toLowerCase();
	const term = searchText.toLowerCase();

To Reproduce

https://stackblitz.com/edit/node-xdxj5xxj?file=index.js

Steps to reproduce the behavior:

• pnpm install
• node index.js

Expected behavior

No crash happen.

Additional Information