build: add v8_toolchain to darwin/x64

.github/workflows/macos-pipeline.yml

@@ -334,6 +334,11 @@ jobs:
         # lipo off some huge binaries arm64 versions to save space
         strip_universal_deep $(xcode-select -p)/../SharedFrameworks
         # strip_arm_deep /System/Volumes/Data/Library/Developer/CommandLineTools/usr
+    - name: Set GN_EXTRA_ARGS for x64 Build
+      if: ${{ env.TARGET_ARCH == 'x64' }}
+      run: |
+        GN_APPENDED_ARGS="$GN_EXTRA_ARGS v8_snapshot_toolchain=\"//build/toolchain/mac:clang_x64\""
+        echo "GN_EXTRA_ARGS=$GN_APPENDED_ARGS" >> $GITHUB_ENV
     - name: Build Electron (darwin)
       run: |
         cd src/electron