docs(auth, social): Play Store APIs required for google sign in (#6606)

* For Google Authentication on Emulator Google Play Store is Required 

For google authentication Google Play store is required to be installed and updated to prevents errors like [Error: A non-recoverable sign in failure occurred]

* Update docs/auth/social-auth.md

Co-authored-by: Mike Hardy <github@mikehardy.net>

docs/auth/social-auth.md

@@ -285,6 +285,8 @@ import auth from '@react-native-firebase/auth';
 import { GoogleSignin } from '@react-native-google-signin/google-signin';
 
 async function onGoogleButtonPress() {
+  // Check if your device supports Google Play
+  await GoogleSignin.hasPlayServices({ showPlayServicesUpdateDialog: true });
   // Get the users ID token
   const { idToken } = await GoogleSignin.signIn();
 
@@ -298,3 +300,5 @@ async function onGoogleButtonPress() {
 
 Upon successful sign-in, any [`onAuthStateChanged`](/auth/usage#listening-to-authentication-state) listeners will trigger
 with the new authentication state of the user.
+
+If you are testing this feature on an android emulator ensure that the emulate is either the Google APIs or Google Play flavor.