nesting hono routes returns undefined error

[TheDanBlanco]

Issue

using a route call on a fromHono chanfana proxy object returns TypeError: Cannot read properties of undefined (reading 'basePath')

Minimal reproduction code

import { fromHono } from "chanfana";
import { type Context, Hono } from "hono";

const app = new Hono();

const parent = fromHono(app);

const nested = new Hono();
nested.get("/", (c) => c.text("hello, world"));

const child = fromHono(nested);

parent.route("/nested", child);

export default parent;

Expected behavior

nesting chanfana proxies in a route function should produce the same results as when done in hono - that is, it should group the routes together as sub-routes

Additional Info

Chanfana version: 2.0.4

Relevant stack trace

TypeError: Cannot read properties of undefined (reading 'basePath')
    at route (/Users/db/dev/cloudflare/simple/node_modules/hono/dist/cjs/hono-base.js:111:25)
    at Proxy.<anonymous> (/Users/db/dev/cloudflare/simple/node_modules/chanfana/dist/index.js:763:50)

the proxy referred to at the trace is located here, and the route call in hono is located here.

there's also currently no documentation in chanfana on how to group hono routes together, only ittyrouter.