Devnet shares an [endpoint](https://0xspaceshard.github.io/starknet-devnet/docs/postman#mock-transactions), which allows to mock l1->l2 txs. We should refactor `get messages status` test to use it (ATM it uses mocks).
Devnet shares an endpoint, which allows to mock l1->l2 txs. We should refactor
get messages statustest to use it (ATM it uses mocks).