codehash mismatched when initgenesis with exported the evm genesis state

[JayT106]

PR #1234 fixes the account delete issue. However, the project running with prior ethermint version will get a panic the code doesn't match with the code hash

short-term: skip checking the code state under two specific cases if the codehash of the evm state code is emptycodehash long-term: state migration to fix the deleted code.