Change ResolveAccountService's handling of skip_webfinger (#15750)

* Change ResolveAccountService's handling of skip_webfinger

Change it so it never makes any webfinger query, as the name would imply.

* Add tests

* Change FollowService to not take an URI for target_account

* Restore domain-block check in FollowService

* Fix tests

spec/controllers/api/v1/follow_requests_controller_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe Api::V1::FollowRequestsController, type: :controller do
   let(:follower) { Fabricate(:account, username: 'bob') }
 
   before do
-    FollowService.new.call(follower, user.account.acct)
+    FollowService.new.call(follower, user.account)
     allow(controller).to receive(:doorkeeper_token) { token }
   end
 

spec/controllers/api/v1/notifications_controller_spec.rb

@@ -57,7 +57,7 @@ RSpec.describe Api::V1::NotificationsController, type: :controller do
       @mention_from_status = mentioning_status.mentions.first
       @favourite = FavouriteService.new.call(other.account, first_status)
       @second_favourite = FavouriteService.new.call(third.account, first_status)
-      @follow = FollowService.new.call(other.account, 'alice')
+      @follow = FollowService.new.call(other.account, user.account)
     end
 
     describe 'with no options' do