Fix generate cleanUrl in post-auth.js with hostname

### Description

### Function postAuth can't redirect to full cleanUrl.

Because we have an app name after the hostname and current version redirect with error.

_Our url:_
_http://host-name/app-name/path_

_Redirect url in current version:_
_http://host-name/path_

**Add generation for redirect as in protect.js**
```
const host = request.hostname
const headerHost = request.headers.host.split(':')
const port = headerHost[1] || ''
const protocol = request.protocol

const redirectUrl = protocol + '://' + host + (port === '' ? '' : ':' + port) + cleanUrl
```

### Discussion

_No response_

### Motivation

_No response_

### Details

#391

Start in post-auth.js and compare its cleanUrl redirect generation with the implementation in protect.js. Check the existing redirect path for an application mounted after the hostname, including any port, and verify that the resulting URL preserves the full http://host-name/app-name/path form.

Written by the indexing model from the issue text.