Cannot change GoogleReplacementMode when using paywalls v2

[AlexGrafl]

• I have updated Purchases SDK to the latest version
• I have read the Contribution Guidelines
• I have searched the Community
• I have read docs.revenuecat.com
• I have searched for existing Github issues

Describe the bug

With the new Paywalls v2, there is no way to change the GoogleReplacementMode when making a purchase. I would need to set purchasesAreCompletedBy to MY_APPS to be able to set a custom purchase logic for the paywall to change the mode accordingly. Even your community support does not agree that thats even the correct approach to solve this issue (see this thread from 2 months ago)

1. Environment
   1. Platform: Android
   2. SDK version: 8.20.0
   3. OS version: 15
   4. Android Studio version:
   5. How widespread is the issue. Percentage of devices affected.
2. Debug logs that reproduce the issue
3. Steps to reproduce, with a description of expected vs. actual behavior
4. Other information (e.g. stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, etc.)

Additional context
Add any other context about the problem here.

[RCGitBot]

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