Clarify EVM::transact and State

[mattsse]

it's not obvious what kind of accounts are included in the State map result of

revm/crates/revm/src/evm.rs

Lines 95 to 96 in df44297

	/// Execute transaction without writing to DB, return change state.
	pub fn transact(&mut self) -> EVMResult<DB::Error> {

here:

revm/crates/primitives/src/result.rs

Lines 16 to 17 in df44297

	/// State that got updated
	pub state: State,

does this mean that only accounts with at least 1 account change (balance,nonce,account) and/or storage value change are included?

does this never included accounts that were only touched?