Fix domain hiding logic (#7765)

* Send rejections to followers when user hides domain they're on

* Use account domain blocks for "authorized followers" action

Replace soft-blocking (block & unblock) behaviour with follow rejection

* Split sync and async work of account domain blocking

Do not create domain block when removing followers by domain, that
is probably unexpected from the user's perspective.

* Adjust confirmation message for domain block

* yarn manage:translations

spec/services/after_block_domain_from_account_service_spec.rb

@@ -0,0 +1,25 @@
+require 'rails_helper'
+
+RSpec.describe AfterBlockDomainFromAccountService, type: :service do
+  let!(:wolf) { Fabricate(:account, username: 'wolf', domain: 'evil.org', inbox_url: 'https://evil.org/inbox', protocol: :activitypub) }
+  let!(:alice) { Fabricate(:account, username: 'alice') }
+
+  subject { AfterBlockDomainFromAccountService.new }
+
+  before do
+    stub_jsonld_contexts!
+    allow(ActivityPub::DeliveryWorker).to receive(:perform_async)
+  end
+
+  it 'purge followers from blocked domain' do
+    wolf.follow!(alice)
+    subject.call(alice, 'evil.org')
+    expect(wolf.following?(alice)).to be false
+  end
+
+  it 'sends Reject->Follow to followers from blocked domain' do
+    wolf.follow!(alice)
+    subject.call(alice, 'evil.org')
+    expect(ActivityPub::DeliveryWorker).to have_received(:perform_async).once
+  end
+end

spec/services/block_domain_from_account_service_spec.rb

@@ -1,19 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe BlockDomainFromAccountService, type: :service do
-  let!(:wolf) { Fabricate(:account, username: 'wolf', domain: 'evil.org') }
-  let!(:alice) { Fabricate(:account, username: 'alice') }
-
-  subject { BlockDomainFromAccountService.new }
-
-  it 'creates domain block' do
-    subject.call(alice, 'evil.org')
-    expect(alice.domain_blocking?('evil.org')).to be true
-  end
-
-  it 'purge followers from blocked domain' do
-    wolf.follow!(alice)
-    subject.call(alice, 'evil.org')
-    expect(wolf.following?(alice)).to be false
-  end
-end