[EWT-590] Fix mandates acceptance tests

[tl-luca-baggi]

Description

In mandates acceptance tests, we have some testing scenario requiring us to wait and poll a mandate until it reaches a certain status, before proceeding with assertions and/or other operations.

The method taking care of this polling operation was using by mistake the tlClient built in the base class, which uses default scopes: as a result, we were invoking the GET /mandates endpoint always using the recurring_payments:sweeping scope (the default if not set explicitly when building the client), and this was causing calls related to cVRP mandates to fail (a recurring_payments:commercial scope is expected in this case).

This PR will fix the bug, that went unnoticed for some time until a stricter check on scopes had been introduced by PGW (PR here for reference)

Type of change

Please select multiple options if required.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code where necessary
• I have added tests that prove my fix is effective or that my feature works
• I have updated the relevant documentation

[swarmia]

✅  Linked to Task EWT-590 · Fix Java library acceptance tests