Enable FHIRPath validation in json_format_r4_test, which provides significantly more test coverage for FHIRPath expressions.
Enable FHIRPath validation in json_format_r4_test, which provides significantly more test coverage for FHIRPath expressions.

Bundle-dataelements.json is excluded due to an issue described in https://jira.hl7.org/browse/FHIR-26461.

PiperOrigin-RevId: 299183380

google/fhir,google/fhir,google/fhir,google/fhir,google/fhir,google/fhir