Fix CQS signal modernize-use-using in xplat/js/react-native-github/packages (#52629)

Summary: Pull Request resolved: #52629

Reviewed By: javache

Differential Revision: D78404030

fbshipit-source-id: 553a9f26327c4b3439b773981c25b5e1d469d8f1

Author: generatedunixname89002005287564

packages/react-native/ReactCommon/react/test_utils/MockClock.h

@@ -11,9 +11,8 @@
 
 class MockClock {
  public:
-  typedef std::chrono::
-      time_point<std::chrono::steady_clock, std::chrono::nanoseconds>
-          time_point;
+  using time_point = std::chrono::
+      time_point<std::chrono::steady_clock, std::chrono::nanoseconds>;
 
   static time_point now() noexcept {
     return time_;