Test data getTestSubstate generate different types of datasets

[matejmode]

Currently getTestSubstate generates static test case, but it would be better to test various possible Substate values.
e.g.

• Different txType:
  • AccessListTxType - AccessList
  • SetCodeTxType - SetCodeAuthorization (now AccessList is allowed here as well for the testing purposes)
  • ...
• contract creation
• blobs
• possible nil values
• ...

substate/db/substate_db_test.go

Line 21 in c57b79c

func getTestSubstate(encoding string) *substate.Substate {