Add unmock function

[Chemaclass]

📚 Description

Currently, you can mock a particular function with custom logic, but there is no way to rollback the mock for other tests. It would be useful to be able to remove/rollback the mocked behaviour.

🔖 Changes

• Add unmock function

All mocks will be removed/rollback to their original behaviour after each test. This means that the mock live scope is tied to the test scope

✅ To-do list

• [x] I updated the CHANGELOG.md to reflect the new feature or fix
• [x] I updated the documentation to reflect the changes

[antonio-gg-dev]

@Chemaclass this is more complex than we anticipated, do you mind if we leave it in draft until we can get together? Besides, I think it's more priority to refactor the acceptance tests and finish the snapshots.

[Chemaclass]

Close because inactivity. I will open it again to seek for new feedback