Gender Identity, Individual Pronouns and RSG FHIRPath expression fixes

[dbojicic]

This PR addresses https://jira.hl7.org/browse/FHIR-46176.

• Updated invariant expressions related to genderIdentity and individualPronouns in AU Base Patient, AU Base RelatedPerson and AU Base Practitioner:
  • added missing structure
  • added function .all() to apply the condition to each instance of the extension
• Updated invariant expressions related to recordedSexOrGender in AU Base Patient, AU Base RelatedPerson and AU Base Practitioner:
  • removed empty check
  • added function .all() to apply the condition to each instance of the extension