issue-2266 implementation causes regression of 1226 FHIRGeneratorException when serializing resource <div> element as XML

[punktilious]

Describe the bug
Issue #1226 was implemented to ensure that fhir-model always uses the correct TransformerFactory class.

Issue #2266 changed the implementation to address an illegal reflective action warning which would become an error in a future version of Java. However, this causes a regression in behavior in one case where the user is using fhir-validation-dist, not the whole server.

Environment
Which version of IBM FHIR Server: 4.10.0 and 4.10.1.

To Reproduce

1. See FHIRGeneratorException thrown when serializing resource <div> element as XML #1226

Expected behavior
The test described by #1226 should pass.

Additional context