It was creating a new account with the hash of an empty storage trie, when really it should be a pointer to an empty storage trie. We can use 0 as this pointer since `@SEGMENT_TRIE_DATA[0] = 0 = @MPT_NODE_EMPTY`.
Also a couple tweaks that helped me debug, like moving the memory value range checks from the interpreter into `MemoryState`, so they're done in actual witness generation as well as interpreter tests.
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