docs(react-router): Add note for Windows users to set env var

docs/platforms/javascript/guides/react-router/index.mdx

@@ -308,6 +308,8 @@ export const handleError: HandleErrorFunction = (error, { request }) => {
 Since React Router is running in ESM mode, you need to use the `--import` command line options to load our server-side instrumentation module before the application starts.
 Update the `start` and `dev` script to include the instrumentation file:
 
+<PlatformContent includePath="node-options-windows" />
+
 ```json {filename: package.json}
 "scripts": {
   "dev": "NODE_OPTIONS='--import ./instrument.server.mjs' react-router dev",

platform-includes/node-options-windows/javascript.react-router.mdx

@@ -0,0 +1,15 @@
+<Expandable title="Are you using Windows?">
+
+If you're on Windows, set the `NODE_OPTIONS` environment variable manually before running your app.
+
+```bash {tabTitle:cmd}
+set NODE_OPTIONS=--import ./instrument.server.mjs
+```
+
+```powershell {tabTitle:PowerShell}
+$env:NODE_OPTIONS="--import ./instrument.server.mjs"
+```
+
+Read more about [environment variables](https://learn.microsoft.com/en-us/windows/win32/procthread/environment-variables).
+
+</Expandable>