SCons: Enable `/WX` on LINKFLAGS for MSVC with `werror=yes`

(cherry picked from commit 30bdb23f03dd90ca255ca6d8fb035f94250b668c)

SConstruct

@@ -733,6 +733,7 @@ if selected_platform in platform_list:
 
         if env["werror"]:
             env.Append(CCFLAGS=["/WX"])
+            env.Append(LINKFLAGS=["/WX"])
     else:  # GCC, Clang
         common_warnings = []