op-program: Switch fpp-verify back to running in separate process. #12201
+59
−23
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Description
Try to reproduce the missing prestate failure we saw previously and believed to be due to non-deterministic trie update orders. Also now runs hourly instead of 4 hourly to increase chances of finding a failing case.
The in-process code is kept around so we can switch back easily if/when we reproduce the issue, it's just disabled by a boolean constant.