Use GTEST_INTERNAL_CPLUSPLUS_LANG instead of __cplusplus

Some versions of MSVC provide incorrect values for the latter and rely on _MSVC_LANG instead.
Fixes #4226.

PiperOrigin-RevId: 527919195
Change-Id: Ifcca4612074f5ebc5337094426866a187f79f90a

googlemock/test/gmock-actions_test.cc

@@ -48,6 +48,7 @@
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest.h"
+#include "gtest/internal/gtest-port.h"
 
 // Silence C4100 (unreferenced formal parameter) and C4503 (decorated name
 // length exceeded) for MSVC.
@@ -221,7 +222,8 @@ TEST(TypeTraits, IsInvocableRV) {
   // In C++17 and above, where it's guaranteed that functions can return
   // non-moveable objects, everything should work fine for non-moveable rsult
   // types too.
-#if defined(__cplusplus) && __cplusplus >= 201703L
+#if defined(GTEST_INTERNAL_CPLUSPLUS_LANG) && \
+    GTEST_INTERNAL_CPLUSPLUS_LANG >= 201703L
   {
     struct NonMoveable {
       NonMoveable() = default;

googlemock/test/gmock-spec-builders_test.cc

@@ -804,7 +804,8 @@ TEST(ExpectCallTest, InfersCardinality1WhenThereIsWillRepeatedly) {
       "to be called at least once");
 }
 
-#if defined(__cplusplus) && __cplusplus >= 201703L
+#if defined(GTEST_INTERNAL_CPLUSPLUS_LANG) && \
+    GTEST_INTERNAL_CPLUSPLUS_LANG >= 201703L
 
 // It should be possible to return a non-moveable type from a mock action in
 // C++17 and above, where it's guaranteed that such a type can be initialized