Fixes #37688 - Do not build action names without actions

If the file already exists but would be empty, it gets deleted.

lib/tasks/gettext.rake

@@ -8,8 +8,6 @@ if gettext_find_task
   namespace :gettext do
     task :store_action_names => :environment do
       storage_file = "#{locale_path}/action_names.rb"
-      puts "writing action translations to: #{storage_file}"
-
       klasses = Actions::EntryAction
                 .subclasses
                 .uniq
@@ -18,12 +16,19 @@ if gettext_find_task
         src.start_with? @engine.root.to_s
       end
 
-      File.write storage_file,
-                 "# Autogenerated!\n" +
-                 klasses
-                 .map { |klass| %[_("#{klass.allocate.humanized_name}")] }
-                 .sort
-                 .join("\n") + "\n"
+      if klasses.any?
+        puts "writing action translations to: #{storage_file}"
+
+        File.write storage_file,
+                   "# Autogenerated!\n" +
+                   klasses
+                     .map { |klass| %[_("#{klass.allocate.humanized_name}")] }
+                     .sort
+                     .join("\n") + "\n"
+      elsif File.exist? storage_file
+        puts "Removing empty action translations file: #{storage_file}"
+        File.delete storage_file
+      end
     end
   end