• 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
When calling Purchases.shared.attribution.enableAdServicesAttributionTokenCollection() the app will freeze on iOS 14.5.

I call this during app startup, after configuring the SDK and my app freezes on the Launch Screen. I tried moving it to later in the app cycle and the app freezes as soon as this is called.

1. Environment
   1. Platform: iPhone and iPad Simulator
   2. SDK version: 4.15.0
   3. StoreKit 2 (disabled with useStoreKit2IfEnabled(false)) (Y/N):
   4. OS version: iOS 14.5
   5. Xcode version: 14.1
   6. How widespread is the issue. Percentage of devices affected.

Additional context
Add any other context about the problem here.

Reported by multiple users here: https://community.revenuecat.com/sdks-51/calling-enableadservicesattributiontokencollection-on-ios-14-5-seems-to-hang-my-app-2010