Revert "chore(docs): update gathering consent info"

This reverts commit daa3eee.

RNGoogleMobileAdsExample/app.json

@@ -4,6 +4,7 @@
   "react-native-google-mobile-ads": {
     "android_app_id": "ca-app-pub-3940256099942544~3347511713",
     "ios_app_id": "ca-app-pub-3940256099942544~1458002511",
+    "delay_app_measurement_init": false,
     "optimize_initialization": true,
     "optimize_ad_loading": true,
     "user_tracking_usage_description": "This identifier will be used to deliver personalized ads to you.",

docs/european-user-consent.mdx

@@ -48,6 +48,33 @@ To setup and configure ads consent collection, first of all:
 
 You'll need to generate a new development build before using it.
 
+### Delaying app measurement
+
+By default, the Google Mobile Ads SDK initializes app measurement and begins sending user-level event data to Google immediately when the app starts.
+If your app will be used by users within the EEA, it is important you prevent app measurement until your first ad has been requested (after consent).
+
+Within your projects `app.json` file, set the `delay_app_measurement_init` to `true` to delay app measurement:
+
+```json
+{
+  "react-native-google-mobile-ads": {
+    "android_app_id": "ca-app-pub-xxxxxxxx~xxxxxxxx",
+    "ios_app_id": "ca-app-pub-xxxxxxxx~xxxxxxxx",
+    "delay_app_measurement_init": true
+  }
+}
+```
+
+Once set, rebuild your application:
+
+```bash
+# For iOS
+npx react-native run-ios
+
+# For Android
+npx react-native run-android
+```
+
 ### App Tracking Transparency
 
 If you want to handle Apple's App Tracking Transparency requirements, ensure you've configured and published your [ATT message](https://developers.google.com/admob/ump/ios/quick-start#app_tracking_transparency) in your Google AdMob account.