Add a /request_review alias for /assign_reviewer

changelogs/unreleased/25381-add-request-review-alias.yml

+---
+title: Add a /request_review alias for /assign_reviewer
+merge_request: 51751
+author:
+type: added

lib/gitlab/quick_actions/merge_request_actions.rb

@@ -187,7 +187,7 @@ module Gitlab
         parse_params do |reviewer_param|
           extract_users(reviewer_param)
         end
-        command :assign_reviewer, :reviewer do |users|
+        command :assign_reviewer, :reviewer, :request_review do |users|
           next if users.empty?
 
           if quick_action_target.allows_multiple_reviewers?

spec/services/quick_actions/interpret_service_spec.rb

@@ -945,6 +945,12 @@ RSpec.describe QuickActions::InterpretService do
           it_behaves_like 'assign_reviewer command'
         end
 
+        context 'with the "request_review" alias' do
+          let(:content) { "/request_review @#{developer.username}" }
+
+          it_behaves_like 'assign_reviewer command'
+        end
+
         context 'with no user' do
           let(:content) { '/assign_reviewer' }