[Autobackout][FunctionalRegression]Revert of change: dbc12b4: Enable 32bit sync stack addressing for raytracing shaders

Enable 32bit sync stack addressing for raytracing shaders

Author: sys-igc

IGC/common/igc_flags.h

@@ -974,7 +974,7 @@ DECLARE_IGC_GROUP("Raytracing Options")
     DECLARE_IGC_REGKEY(bool, DisableStatefulRTSyncStackAccess, true, "do stateless rather than stateful accesses to the HW portion of the sync stack", true)
     DECLARE_IGC_REGKEY(bool, DisableStatefulSWHotZoneAccess, false, "do stateless rather than stateful accesses to the SW HotZone", true)
     DECLARE_IGC_REGKEY(bool, DisableStatefulSWStackAccess, false, "do stateless rather than stateful accesses to the SW Stack", true)
-    DECLARE_IGC_REGKEY(bool, DisableStatefulRTSyncStackAccess4RTShader, false, "do stateless rather than stateful accesses to the HW portion of the sync stack. RT Shader only.", true)
+    DECLARE_IGC_REGKEY(bool, DisableStatefulRTSyncStackAccess4RTShader, true, "do stateless rather than stateful accesses to the HW portion of the sync stack. RT Shader only.", true)
     DECLARE_IGC_REGKEY(bool, DisableStatefulRTSyncStackAccess4nonRTShader, true, "do stateless rather than stateful accesses to the HW portion of the sync stack. nonRT Shader only.", true)
     DECLARE_IGC_REGKEY(bool, DisableRTBindlessAccess, false, "do bindful rather than bindless accesses to raytracing memory", true)
     DECLARE_IGC_REGKEY(bool, DisableRTStackOpts, false, "Disable some optimizations that minimize reads/writes to the RTStack", true)