Follow up 0628b78 - Fixes #5091 - New timezone is not immediately available in active sessions

.rubocop/cop/zammad/timezone_default.rb

@@ -0,0 +1,31 @@
+# Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/
+
+module RuboCop
+  module Cop
+    module Zammad
+      class TimezoneDefault < Base
+        def on_str(node)
+          return if !matching_string?(node)
+          return if !matching_node?(node)
+
+          add_offense(node.parent, message: <<~TEXT.chomp)
+            Setting.get('timezone_default_sanitized') is removed.
+            Please use Setting.get('timezone_default') directly.
+          TEXT
+        end
+
+        def matching_string?(node)
+          node.source == "'timezone_default_sanitized'"
+        end
+
+        def matching_node?(node)
+          parent = node.parent
+
+          return false if !parent
+
+          parent.receiver&.const_name == 'Setting' && parent.method_name == :get
+        end
+      end
+    end
+  end
+end

.rubocop/rubocop_zammad.rb

@@ -16,6 +16,7 @@ require_relative 'cop/zammad/forbid_translatable_marker'
 require_relative 'cop/zammad/migration_scheduler_last_run'
 require_relative 'cop/zammad/no_to_sym_on_string'
 require_relative 'cop/zammad/prefer_negated_if_over_unless'
+require_relative 'cop/zammad/timezone_default'
 require_relative 'cop/zammad/to_forbid_over_not_to_permit'
 require_relative 'cop/zammad/trigger_from_commit_hooks'
 require_relative 'cop/zammad/update_copyright'