chore: improve expo router testing (#23795)

# Why

- Ensure the various aspects of `npx expo export` continue to work with
the latest Expo Router/Metro depdencies.
- We had a bundling testing fo

chore: improve expo router testing (#23795)

# Why

- Ensure the various aspects of `npx expo export` continue to work with
the latest Expo Router/Metro depdencies.
- We had a bundling testing for Expo Router but it wasn't linked to the
monorepo so the dependencies weren't in sync.

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# How

- Create a new app in `apps/` which is synchronized with the monorepo.
- This app contains multiple expo-router directories and various dynamic
settings.
- Fold the `expo-router` e2e tests into `@expo/cli`.
- Test static rendering, single-page application exporting, and the
native url polyfill (api).

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# Test Plan

- The CLI E2E tests should pass.

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Co-authored-by: Expo Bot <[email protected]>

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