WWW-Authenticate header for unauthenticated requests is not clear

## Describe the bug
While doing unauthenticated requests, `WWW-Authenticate` header gives `Basic realm=localhost:9200`
I should give the product name and encoding as it does in oc 10
eg `< WWW-Authenticate: Basic realm="ownCloud", charset="UTF-8"`

## Setup

Please describe how you started the server and provide a list of relevant environment variables.

```console
OCIS_VERSION=vX.X.X
BRANCH=vX.X.X
STORAGE_FRONTEND_UPLOAD_DISABLE_TUS=false
```

## Additional context
Add any other context about the problem here.