collab: Use `StripeClient` in `StripeBilling::subscribe_to_price` (#31631)
This PR updates the `StripeBilling::subscribe_to_price` method to use
the `StripeClient` trait.
Release Notes:
- N/A
00bdebc89dMarshall Bowers committed on 5/28/2025, 9:17:11 PM· committed by GitHubparentd513406