fix: disable C++ modules in libnode builds

patches/node/.patches

@@ -52,4 +52,4 @@ chore_exclude_electron_node_folder_from_exit-time-destructors.patch
 api_remove_deprecated_getisolate.patch
 src_switch_from_get_setprototype_to_get_setprototypev2.patch
 fix_replace_deprecated_setprototype.patch
-fix_js2c_including_mac_sdk_headers_twice.patch
+fix_redefined_macos_sdk_header_symbols.patch

patches/node/fix_redefined_macos_sdk_header_symbols.patch

@@ -1,19 +1,30 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Samuel Maddock <smaddock@slack-corp.com>
 Date: Wed, 8 Oct 2025 10:50:03 -0400
-Subject: fix: js2c including mac sdk headers twice
+Subject: fix: redefined macos sdk header symbols
 
 https://chromium-review.googlesource.com/c/chromium/src/+/6950738
 
 Chromium has set the minimum MacOS SDK version to 26. With this
 change, it seems to introduce an incompatibility when compiling
-using clang modules. Disabling them seems to resolve the issue.
+using clang modules. Disabling them resolves the issue.
 
 diff --git a/unofficial.gni b/unofficial.gni
-index a64d2e4ac475abc049fff7ea62ec76de565a747d..61aeac679a90832a1d9f559a4eb880362bce038d 100644
+index a64d2e4ac475abc049fff7ea62ec76de565a747d..ab456452d102088005fc4bfcb394d2de5ec44889 100644
 --- a/unofficial.gni
 +++ b/unofficial.gni
-@@ -350,6 +350,12 @@ template("node_gn_build") {
+@@ -195,6 +195,10 @@ template("node_gn_build") {
+         "CoreFoundation.framework",
+         "Security.framework",
+       ]
++
++      # Fix for MacOSX26 SDK headers included twice due to usage of clang
++      # modules. Included once as a C header and again as C++.
++      use_libcxx_modules = false
+     }
+     if (is_posix) {
+       configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
+@@ -350,6 +354,12 @@ template("node_gn_build") {
      include_dirs = [ "src", "tools" ]
      configs += [ "//build/config/compiler:no_exit_time_destructors" ]