get(target, key) {
		if (target.exclude.includes(key)) return;
		return target.props[key];
	}
The proxy handler for rest props (i.e. `const { x, ...rest } = $props()`).
Is passed the full `$$props` object and excludes the named props.
@type {ProxyHandler<{ props: Record<string | symbol, unknown>, exclude: Array<string | symbol>, name?: string }>}}