Support attn alias for attention

Changelog: changed

app/services/quick_actions/interpret_service.rb

@@ -168,7 +168,7 @@ module QuickActions
         next unless definition
 
         definition.execute(self, arg)
-        usage_ping_tracking(name, arg)
+        usage_ping_tracking(definition.name, arg)
       end
     end
 
@@ -186,7 +186,7 @@ module QuickActions
 
     def usage_ping_tracking(quick_action_name, arg)
       Gitlab::UsageDataCounters::QuickActionActivityUniqueCounter.track_unique_action(
-        quick_action_name,
+        quick_action_name.to_s,
         args: arg&.strip,
         user: current_user
       )

lib/gitlab/quick_actions/merge_request_actions.rb

@@ -291,7 +291,7 @@ module Gitlab
         parse_params do |attention_param|
           extract_users(attention_param)
         end
-        command :attention do |users|
+        command :attention, :attn do |users|
           next if users.empty?
 
           users.each do |user|

spec/services/quick_actions/interpret_service_spec.rb

@@ -726,6 +726,17 @@ RSpec.describe QuickActions::InterpretService do
 
         expect(reviewer).to be_attention_requested
       end
+
+      it 'supports attn alias' do
+        attn_cmd = content.gsub(/attention/, 'attn')
+        _, _, message = service.execute(attn_cmd, issuable)
+
+        expect(message).to eq("Requested attention from #{developer.to_reference}.")
+
+        reviewer.reload
+
+        expect(reviewer).to be_attention_requested
+      end
     end
 
     shared_examples 'remove attention command' do