[gn build] Port 55803b8

Author: llvmgnsyncbot

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -1496,6 +1496,7 @@ if (current_toolchain == default_toolchain) {
       "__type_traits/is_floating_point.h",
       "__type_traits/is_function.h",
       "__type_traits/is_fundamental.h",
+      "__type_traits/is_generic_transparent_comparator.h",
       "__type_traits/is_implicit_lifetime.h",
       "__type_traits/is_implicitly_default_constructible.h",
       "__type_traits/is_integral.h",
@@ -1538,6 +1539,7 @@ if (current_toolchain == default_toolchain) {
       "__type_traits/make_32_64_or_128_bit.h",
       "__type_traits/make_const_lvalue_ref.h",
       "__type_traits/make_signed.h",
+      "__type_traits/make_transparent.h",
       "__type_traits/make_unsigned.h",
       "__type_traits/maybe_const.h",
       "__type_traits/nat.h",