Parameters resource validation not applying invariants to part element

[cames-be]

Describe the bug
Parameters.parameter.part is a contentReference that should inherit the constraints from Parameters.parameter. The validators are not applying the invariant when an invalid Parameters resource is used. Using the following example Parameters resource

{
	"resourceType": "Parameters",
	"parameter": [
		{
			"name": "temp-name",
			"part": [
				{
					"name": "invalid"
				}
			]
		}
	]
}

The lack of Parameters.parameter[0].part[0].value element should result in an OperationOutcome with an error issue but instead it returns an OperationOutcome with no issues. Using the legacy validators correctly returns an OperationOutcome:

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "error",
      "code": "invariant",
      "details": {
        "coding": [
          {
            "system": "http://hl7.org/fhir/dotnet-api-operation-outcome",
            "code": "1012"
          },
          {
            "system": "http://hl7.org/fhir/StructureDefinition/Parameters",
            "code": "inv-1",
            "display": "A parameter must have one and only one of (value, resource, part)"
          }
        ],
        "text": "Instance failed constraint inv-1 \"A parameter must have one and only one of (value, resource, part)\""
      },
      "diagnostics": "(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))",
      "location": [
        "Parameters.parameter[0].part[0]"
      ],
      "expression": [
        "Parameters.parameter[0].part[0]"
      ]
    }
  ]
}

To Reproduce
Steps to reproduce the behavior:

1. Go to https://github.com/cames-be/firely-validator-api-parameters-issue
2. Run the unit tests in both projects
3. The unit test in the firely-validator-api-legacy project generates an OperationOutcome with the correct issue
4. The unit test in the firely-validator-api-current project generates an empty OperationOutcome with no issues

Expected behavior
The validator should create an OperationOutcome with an issue for the Parameters invariant inv-1 https://hl7.org/fhir/R4/parameters.html#invs

Version used:

• FHIR Version: R4
• Firely.FHIR.Validation Version: 2.6.1
• Hl7.Fhir.R4 version 5.11