feat(ingest/datahub): support dropping duplicate schema fields (#12308) #184

Job	Run time
event-file	4s
setup	9s
quickstart-compose-validation	16s
build (except_metadata_ingestion, UTC)	21m 10s
build (frontend, UTC)	13m 43s
build (frontend, America/New_York)	12m 37s
	47m 59s

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