Rename ResolveRemoteAccountService to ResolveAccountService (#6327)

The service used to be named ResolveRemoteAccountService resolves local
accounts as well.

app/workers/resolve_account_worker.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class ResolveAccountWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: 'pull', unique: :until_executed
+
+  def perform(uri)
+    ResolveAccountService.new.call(uri)
+  end
+end