TS: regenerate R4 profile examples and add is() demos #1070

Job	Run time
test-typescript-sdk-r4	16s
test-python-fhirpy-sdk	1m 20s
test-python-sdk	1m 18s
test-typescript-us-core-example	34s
test-on-the-fly-example	1m 2s
test-csharp-sdk	1m 24s
test-mustache-java-r4-example (25)	18s
test-local-package-folder-example	17s
test-mustache-java-r4-example (21)	17s
test-typescript-ccda-example	1m 14s
	8m 0s

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