feat: do not resolve MX records during configuration

MX record lookup was only used to detect Google Workspace domains.
They can still be configured manually.
We anyway do not want to encourage creating new profiles
with Google Workspace as we don't have Gmail OAUTH2 token anymore
and new users can more easily onboard with a chatmail relay.

src/sql/migrations.rs

@@ -19,7 +19,7 @@ use crate::key::DcKey;
 use crate::log::{info, warn};
 use crate::login_param::ConfiguredLoginParam;
 use crate::message::MsgId;
-use crate::provider::get_provider_by_domain;
+use crate::provider::get_provider_info;
 use crate::sql::Sql;
 use crate::tools::{Time, inc_and_check, time_elapsed};
 
@@ -382,7 +382,7 @@ UPDATE chats SET protected=1, type=120 WHERE type=130;"#,
                 context
                     .set_config_internal(
                         Config::ConfiguredProvider,
-                        get_provider_by_domain(&domain).map(|provider| provider.id),
+                        get_provider_info(&domain).map(|provider| provider.id),
                     )
                     .await?;
             } else {