Implement test for producing and proving of transaction for new account

[polydez]

What should be done?

At the moment, we don't have tests which produce and prove transactions for new account.

How should it be done?

The new test should create new account in transaction, prove it (transform to proven transaction) and ensure that transaction ID wasn't changed.

When is this task done?

When this test is implemented and it doesn't fail.

Additional context

Additional context here: #529 (comment)

[igamigo]

Closed by #801