reapply D67816543 to skip zones_init in test controller

Summary:
1. now with WWW_Test fully rolled out(D68026113), let's skip pz2 init on controller layer and have it fully delegated to WWWHackTestRunner.
2. also added a new trait `TP2TestSkipWWWTestInitializer` for pz2 internal testing use where when zone_init was tested. Update tests to use this trait wherever needed.

Differential Revision: D68139633

fbshipit-source-id: b5596ac92c429b3338dbdc2661a5a844a8ad6b9c

thrift/lib/hack/src/contextprop/__tests__/UpdateUniverseContextHandlerTest.php

@@ -2,7 +2,9 @@
 // (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
 
 <<Oncalls('xdc_artillery')>>
-final class UpdateUniverseContextHandlerTest extends WWWTest {
+final class UpdateUniverseContextHandlerTest
+  extends WWWTest
+  implements IWWWTestPrivacyLibSkipPZ2Annotation {
 
   use ClassLevelTest;