chore: Update account deletion email copy (#12317)

Update the email copies for account deletion emails 

## Manual Deletion 

<img width="1378" height="678" alt="Screenshot 2025-08-29 at 2 41 40 PM"
src="https://github.com/user-attachments/assets/63d7ad97-ad51-4a8b-9ef3-d427fa467f8a"
/>

## Inactive Deletion

<img width="2946" height="1808" alt="image"
src="https://github.com/user-attachments/assets/bb50d08c-8701-4f93-af29-0b1d948a4009"
/>

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/mailers/administrator_notifications/account_notification_mailer.rb

@@ -1,10 +1,22 @@
 class AdministratorNotifications::AccountNotificationMailer < AdministratorNotifications::BaseMailer
-  def account_deletion(account, reason = 'manual_deletion')
-    subject = 'Your account has been marked for deletion'
+  def account_deletion_user_initiated(account, reason)
+    subject = 'Your Chatwoot account deletion has been scheduled'
     action_url = settings_url('general')
     meta = {
       'account_name' => account.name,
-      'deletion_date' => account.custom_attributes['marked_for_deletion_at'],
+      'deletion_date' => format_deletion_date(account.custom_attributes['marked_for_deletion_at']),
+      'reason' => reason
+    }
+
+    send_notification(subject, action_url: action_url, meta: meta)
+  end
+
+  def account_deletion_for_inactivity(account, reason)
+    subject = 'Your Chatwoot account is scheduled for deletion due to inactivity'
+    action_url = settings_url('general')
+    meta = {
+      'account_name' => account.name,
+      'deletion_date' => format_deletion_date(account.custom_attributes['marked_for_deletion_at']),
       'reason' => reason
     }
 
@@ -45,4 +57,14 @@ class AdministratorNotifications::AccountNotificationMailer < AdministratorNotif
 
     send_notification(subject, action_url: action_url, meta: meta)
   end
+
+  private
+
+  def format_deletion_date(deletion_date_str)
+    return 'Unknown' if deletion_date_str.blank?
+
+    Time.zone.parse(deletion_date_str).strftime('%B %d, %Y')
+  rescue StandardError
+    'Unknown'
+  end
 end