fix getRealm implementation

[fcolarich]

Pasted from Slack thread:

Sergey D.
Yes, we've figured it out. The problem is that getRealm in E@ misses baseUrl prop. Instead, it has domain . If it's intentional change (why, btw?) - it should be reflected in rewards api doc, because right now there is baseUrl used in example.

Also, SDK definition for getRealm response lacks that domain prop, too. So we had to do a bit of dirty //@ts-ignore magic.