ConcurrentModificationException in removeCorruptedEntries

thread: DefaultDispatcher-worker-1, Corrupted cache info file: count of files in the cache directory (21) != entries in the cache info file (12)

`Exception in thread "DefaultDispatcher-worker-1" java.util.ConcurrentModificationException
at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1498)
at java.base/java.util.HashMap$ValueIterator.next(HashMap.java:1526)
at cache.DiskCache.removeCorruptedEntries(DiskCache.kt:336)
at cache.DiskCache.innerReadCacheFile(DiskCache.kt:262)
at cache.DiskCache.access$innerReadCacheFile(DiskCache.kt:11)
at cache.DiskCache$cacheOperationsActor$1.invokeSuspend(DiskCache.kt:33)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)
at kotlinx.coroutines.DispatchedTask$DefaultImpls.run(Dispatched.kt:235)
at kotlinx.coroutines.AbstractContinuation.run(AbstractContinuation.kt:19)
at kotlinx.coroutines.scheduling.Task.run(Tasks.kt:94)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:586)
at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:732)`

Start in DiskCache.kt at removeCorruptedEntries around line 336, following the call from innerReadCacheFile around line 262. Reproduce the corrupted-cache condition where the directory contains more files than the cache info file, then verify that cleanup completes without ConcurrentModificationException.

Written by the indexing model from the issue text.