Describe the issue

During #5463 discovered 2 issues in unit tests for evo_trivialvalidation.

1. there's no unit tests for basic scheme of bls, only for legacy scheme

    //TODO: Provide raw data for basic scheme as well

2. failed unit tests checks only "succeed/failed" as a flag but doesn't validate error message. Just a simple boolean validation is not good enough because test can be invalid by other reason. The result TxValidationState should be validated properly (code + message).