[Console] Fix QuestionHelperTest
[Console] Fix QuestionHelperTest

- When using the `InputInterface` mock with interactive option, asking a
  ChoiceQuestion without specifying max attempts nor a default value led
to an infinite loop when invalid values are submitted. In case there is
something wrong in tests, it wasn't obvious to understand what's
happening, as the process was constantly waiting for inputs.
- `testAmbiguousChoiceFromChoicelist` test was wrong as the
  autocompleter filled the value and the test was never triggered (+max
attempt issue).

oswaldderiemaecker/Console,symfony/Console,kwn/Console