fix(ts-profile): preserve fixed CodeableConcept codings #1217

Job	Run time
test-on-the-fly-example	53s
test-python-fhirpy-sdk	1m 22s
test-csharp-sdk	1m 31s
test-mustache-java-r4-example (21)	16s
test-typescript-ccda-example	1m 11s
test-python-sdk	1m 35s
test-typescript-sdk-r4	41s
test-typescript-us-core-example	38s
test-mustache-java-r4-example (25)	16s
test-local-package-folder-example	16s
	8m 39s

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