Remove getCode() from CodeDelegationService.processAccount

[daniellehrner]

Every time that we get an account in the EVM through EVMWorldUpdater we are calling getCode() to know if an account has delegated code or not. The performance overhead of this abstraction is too high and it might be a problem in the future with Verkle. We should refactor the code to only call getCode() when it is absolutely necessary. It should be necessary in at least 2 places:

1. For the to account of a transaction at the beginning of the transaction
2. Whenever *CALL* op code is used it is necessary for the target of this call