The .containerRelativeFrame(.horizontal) on the marketing content
caused an infinite layout loop inside SubscriptionStoreView's scroll
container. Replaced with .frame(maxWidth: .infinity).
Also fixes leading space in StoreKit config display name, adds
debug logging to product loading, and reverts to groupID initializer.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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