`AuthManagerServiceImpl.getTokenWithAccount` missing package overriding feature

Nobody has claimed this yet.

So I was looking into implementing the user flavour for YouTube by patching the app. However I came across:

```
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: java.io.IOException: org.microg.gms.common.NotOkayException: Error=UNREGISTERED_ON_API_CONSOLE
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: LoggableAuthErrorMessage=This android application is not registered to use OAuth2.0, please confirm the package name and SHA-1 certificate fingerprint match what you registered in Google Developer Console. See https://developer.android.com/google/auth/http-auth.html#Register for more information. Common fixes include checking that the app is signed with the registered key, and that applicationId and applicationIdSuffix are set to appropriate values in Android Studio.
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at org.microg.gms.auth.AuthManager.requestAuthWithBackgroundResolution(AuthManager.java:277)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at org.microg.gms.auth.AuthManagerServiceImpl.getTokenWithAccount(AuthManagerServiceImpl.java:148)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at com.google.android.auth.IAuthManagerService$Stub.onTransact(IAuthManagerService.java:135)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at org.microg.gms.auth.AuthManagerServiceImpl.onTransact(AuthManagerServiceImpl.java:275)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at android.os.Binder.execTransactInternal(Binder.java:1473)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: at android.os.Binder.execTransact(Binder.java:1418)
02-14 23:17:33.723 32358 32550 W GmsAuthManagerSvc: Caused by: org.microg.gms.common.NotOkayException: Error=UNREGISTERED_ON_API_CONSOLE
```

Despite implementing package overriding for MicroG GmsCore. I traced it back to `AuthManagerServiceImpl.getTokenWithAccount`. It looks like AuthManager is instantiated with the original package name:

while this logic from `getAuthToken` is missing:

I am not entirely sure whats going on but this is my best bet so far. Is this intentional?

Start in AuthManagerServiceImpl.java at getTokenWithAccount and compare how getAuthToken handles package overriding before AuthManager is instantiated. Trace the package name passed into the authentication flow and verify that the overriding behavior used by MicroG GmsCore is also applied here. Reproduce the OAuth error if possible and confirm that the request no longer uses the original package name.

Written by the indexing model from the issue text.