[firebase_auth]: Authentication redirection from the browser fails due to taskAffinity configuration

### [READ] Step 1: Are you in the right place?

Issues filed here should be about bugs in __the code in this repository__.
If you have a general question, need help debugging, or fall into some
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### [REQUIRED] Step 2: Describe your environment

* Android Studio version: Ladybug
* Firebase Component: Auth
* Component version: _____

### [REQUIRED] Step 3: Describe the problem

After authenticating the Android app using AppleAuthProvider, the app does not return from the browser due to the taskAffinity configuration. Removing taskAffinity resolves the issue.

#### Steps to reproduce:

When attempting to authenticate with AppleAuthProvider, the app does not redirect back after a successful login

#### Relevant Code:

```xml