chore(i18n): Improvements in automation and macros (#11231)

# Pull Request Template

## Description

This PR includes,
1. **Sort Accounts List** – Orders the accounts list alphabetically for
better organization.
2. **Add Missing Translations in Automation** – Includes missing
translations for actions, events, and conditions dropdown.
3. **Fix Missing Translation in Macros** – Adds missing translations in
the macros action select dropdown.
4. Translate "Automation System" Username – Ensures the "Automation
System" username is properly translated.

Fixes: https://linear.app/chatwoot/issue/CW-4198/issues-[converso]

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/models/concerns/activity_message_handler.rb

@@ -68,7 +68,7 @@ module ActivityMessageHandler
 
   def automation_status_change_activity_content
     if Current.executed_by.instance_of?(AutomationRule)
-      I18n.t("conversations.activity.status.#{status}", user_name: 'Automation System')
+      I18n.t("conversations.activity.status.#{status}", user_name: I18n.t('automation.system_name'))
     elsif Current.executed_by.instance_of?(Contact)
       Current.executed_by = nil
       I18n.t('conversations.activity.status.system_auto_open')
@@ -111,7 +111,7 @@ module ActivityMessageHandler
   end
 
   def activity_message_owner(user_name)
-    user_name = 'Automation System' if !user_name && Current.executed_by.present?
+    user_name = I18n.t('automation.system_name') if !user_name && Current.executed_by.present?
     user_name
   end
 end

app/models/concerns/priority_activity_message_handler.rb

@@ -7,7 +7,7 @@ module PriorityActivityMessageHandler
     old_priority, new_priority = previous_changes.values_at('priority')[0]
     return unless priority_change?(old_priority, new_priority)
 
-    user = Current.executed_by.instance_of?(AutomationRule) ? 'Automation System' : user_name
+    user = Current.executed_by.instance_of?(AutomationRule) ? I18n.t('automation.system_name') : user_name
     content = build_priority_change_content(user, old_priority, new_priority)
 
     ::Conversations::ActivityMessageJob.perform_later(self, activity_message_params(content)) if content