ModelInfo for singular elements derived from plural ones

[brynrhodes]

When a profile changes cardinality of a plural element to singular, the ModelInfo outputs the element in the profile as a singular element, rather than as a List of elements. This results in run-time errors because the underlying classes still have the plural modeling based on the ancestor profile and ultimately resource definition.

The issue was reported on the translator here (for QICore 4.1.1): https://github.com/cqframework/clinical_quality_language/issues/1136

The issue was addressed there by manually updating the MedicationNotRequested.reasonCode element to be plural, but the tooling in general should not reduce cardinality of derived elements to avoid this runtime issue.