" redirect to the first prefixed locale that matches the requested hostname" test failures

## To Reproduce

Step by step instructions to reproduce the behavior:

1. Clone this repo
2. `npm install`
3. Start local mongodb daemon
4. ` npx mocha test/i18n.js `
5. See error

## Expected behavior
All tests pass

## Describe the bug
Test output:

> 17 passing (7s)
> 2 failing
>
> 1) redirection to first locale
> should redirect to the first prefixed locale that matches the requested hostname:
> FetchError: request to http://ca.localhost:37957/ failed, reason: getaddrinfo ENOTFOUND ca.localhost
> at ClientRequest. (node_modules/node-fetch/lib/index.js:1501:11)
> at ClientRequest.emit (node:events:517:28)
> at Socket.socketErrorListener (node:_http_client:501:9)
> at Socket.emit (node:events:517:28)
> at emitErrorNT (node:internal/streams/destroy:151:8)
> at emitErrorCloseNT (node:internal/streams/destroy:116:3)
> at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
>
> 2) no redirection to first locale
> should not redirect to the first prefixed locale that matches the requested hostname when at least one locale has no prefix:
> FetchError: request to http://ca.localhost:36819/ failed, reason: getaddrinfo ENOTFOUND ca.localhost
> at ClientRequest. (node_modules/node-fetch/lib/index.js:1501:11)
> at ClientRequest.emit (node:events:517:28)
> at Socket.socketErrorListener (node:_http_client:501:9)
> at Socket.emit (node:events:517:28)
> at emitErrorNT (node:internal/streams/destroy:151:8)
> at emitErrorCloseNT (node:internal/streams/destroy:116:3)
> at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
>

## Details

**Version of Node.js:**
v18.20.6

**Server Operating System:**
Ubuntu 24.04.1 LTS on Windows wsl v2

**Additional Context:**
Mongo v8.0.4

Install dependencies and run `npx mocha test/i18n.js` with the local MongoDB daemon, then inspect the two failing redirection tests for the `ca.localhost` hostname resolution errors. Done means the two tests no longer fail and all tests pass.

Written by the indexing model from the issue text.