Custom login, giving server_name sticks as "matrix server" later

### Steps to reproduce

0. Have HS with client .well-known
1. Go to custom login
2. Write server_name as asked server (and not the actual url server answers from).
3. Login
4. In general settings See "https://server_name" as Homeserver address insated of the actual server address (that well-known resolves into).

### What happened?

### What did you expect?
To see actual homeserver address in homeserver address field.

### What happened?
Setting shows the server_name instead of actual homeserver address.

### Your phone model

Multiple

### Operating system version

Android 10

### Application version and app store

Element 1.2.2 form gplay

### Homeserver

hacklab.fi

### Have you submitted a rageshake?

No