Create integration tests for `HathorWallet` and `HathorWalletServiceWallet` classes

[pedroferreira1]

Acceptance criteria

• All methods from both facades should be tested for all possible parameters combinations and the returns from the full node.

Related PR's

• test: HathorWallet facade integration tests #374
• refactor: Integration test syntax improvements #393
• extended coverage for the HathorWallet facade
• Wallet Service integration tests