Associate a practitioner with a specialty

Associates the practitioner with a specialty at the tenant level, with best-effort cascade to group, location, and network levels. The practitioner-level specialty is always attempted first; lower-level associations are created on a best-effort basis, and failures at those levels do not cause the overall request to fail. Use this when a practitioner gains a new specialty that should be recorded across all applicable levels. {practitionerId} is the certifyPractitionerId, and the request body must identify the specialty to associate: either tenantSpecialtyId or practitionerRole must be present, and data is required only when tenantSpecialtyId is supplied.