Windows: Fix build issue with VCPKG

For blender we disable VCPKG to prevent it from picking
up the wrong libraries from VCPKG rather than our lib folder
some of the cycles tests needed this to link correctly.

reported by @alef on chat

build_files/cmake/Modules/GTestTesting.cmake

@@ -97,6 +97,7 @@ macro(BLENDER_SRC_GTEST_EX)
       set_tests_properties(${TARGET_NAME} PROPERTIES ENVIRONMENT LSAN_OPTIONS=exitcode=0)
     endif()
     if(WIN32)
+      set_target_properties(${TARGET_NAME} PROPERTIES VS_GLOBAL_VcpkgEnabled "false")
       unset(MANIFEST)
     endif()
     unset(TEST_INC)