Do not display multi-component analysis in report but analytes

[xispa]

Description of the issue/feature this PR addresses

This Pull Request makes impress compatible with https://github.com/senaite/senaite.core/pull/2120 , so multi-component analysis is not displayed in results report, but the list of analytes/components only

Current behavior before PR

Both multi-component and analytes are displayed in results report

Desired behavior after PR is merged

Only analytes are displayed in results report

-- I confirm I have tested this PR thoroughly and coded it according to PEP8 and Plone's Python styleguide standards.