presentation/widgets/common/review_prompt_trigger library

Classes

ReviewPromptTrigger
Wraps child and calls maybeRequestReview every time winStreakEvents fires (ENH-87) — the ready-to-use widget counterpart to in_app_review_helper.dart's decision logic, which the rest of the kit had no widget consuming at all before this. Same "core service has timing logic → widget listener wired to it" pattern as AchievementUnlockListener/AchievementService.