fix: ConcurrentModificationException in repostAuthors#424
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…cationException repostAuthors stored plain LinkedHashSet instances that were written to from relay IO coroutines and iterated from the feed filter coroutine on Dispatchers.Default. Replace with ConcurrentHashMap.newKeySet() at all four creation sites so concurrent add/iterate is safe. Fixes crash on Samsung SM-A546U (Android 13) at EventRepository.isRepostedByAny.
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Summary
ConcurrentModificationExceptionatEventRepository.isRepostedByAnyrepostAuthorsLruCache stored plainLinkedHashSetinstances written from relay IO coroutines and iterated from the feed filter coroutine onDispatchers.DefaultmutableSetOf()withConcurrentHashMap.newKeySet()at all four creation sites so concurrent add/iterate is safeTest plan
adb logcat -s AndroidRuntimefor crashes