`test_trace_acquisition_measurement_control`: Prevent StopIteration upon more calls than elem in side_effect

Explanation of changes

test_trace_acquisition_measurement_control is periodically running into StopIteration.

Motivation of changes

Mocker raises StopIteration upon more calls than elem in side_effect; extending the list should allow for an extra call without causing failure (also see https://stackoverflow.com/a/71833875).

        side_effect=np.linspace(start=0, stop=1.0, num=4).tolist() + 3 * [1.0]

---

Merge checklist

See also merge request guidelines

• Merge request has been reviewed and approved by a project maintainer.
• Merge request contains a clear description of the proposed changes and the issue it addresses.
• Merge request made onto appropriate branch (main for most MRs).
• New code is fully tested.
• New code is documented and docstrings use numpydoc format.
• CHANGELOG.rst and AUTHORS.rst have been updated (when applicable).
• CI pipelines pass
  • pre-commit run --all-files --hook-stage commit passes (gitlab-ci),
  • test suite passes (gitlab-ci),
  • no degradation in code-coverage (codacy),
  • no (serious) new pylint code quality issues introduced (codacy),
  • documentation builds successfully (CI and readthedocs),
  • windows tests pass (manually triggered by maintainers before merging).

---

For reference, the issues workflow is described in the contribution guidelines.