fix: uri encode dynamic routes in dev (#71588)
## Why?
In `next dev`, `404` errors are returned for dynamic routes that contain
characters that should be URI encoded in the path. The `404`s are not
present in `next build`.
## How?
We're failing to decode the
[`resolvedUrlPathname`](https://github.com/vercel/next.js/blob/ffec1d3a458056a4531e6b35518fca28bf9c3943/packages/next/src/server/base-server.ts#L2897)
in `next dev`, resulting in a `404`. So we add the same decoding logic
in development.
- Fixes https://github.com/vercel/next.js/issues/63002
