fix: include arm64 Windows executable in npm module (#3067)

This is in support of https://github.com/openai/codex/issues/2979.

Tested by running:

```
./codex-cli/scripts/install_native_deps.sh --workflow-url https://github.com/openai/codex/actions/runs/17416421450
```

codex-cli/bin/codex.js

@@ -43,7 +43,8 @@ switch (platform) {
         targetTriple = "x86_64-pc-windows-msvc.exe";
         break;
       case "arm64":
-      // We do not build this today, fall through...
+        targetTriple = "aarch64-pc-windows-msvc.exe";
+        break;
       default:
         break;
     }