Write crashes and crash metadata to sharded directories. #1425
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Previously, when running with multiple threads, the threads would sometimes concurrently find the same crashing input, and would then concurrently try to write it to the same file. PiperOrigin-RevId: 690846033
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Write crashes and crash metadata to sharded directories.
Previously, when running with multiple threads, the threads would sometimes
concurrently find the same crashing input, and would then concurrently try
to write it to the same file.