itemExtractionContext is missing in ANCA Questionnaire

[PallaviGanorkar]

https://build.fhir.org/ig/WorldHealthOrganization/smart-anc/Questionnaire-ANCA.html

itemExtractionContext is missing for all resources in ANCA Questionnaire
eg:
"extension": [
{
"url": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext",
"valueExpression": {
"language": "application/x-fhir-query",
"expression": "Encounter",
"name": "encounter"
}
}
]