Show deprecation for legacy imports #2550

Job	Run time
Build samples	29s
Build	3m 18s
Unit test	3m 14s
Static code analysis	3m 11s
Type definitions test	3m 9s
Print commit stats	3m 11s
Merge test results	7s
Merge test snapshots	5s
HTML test (${{ format('{0}/{1}', matrix.shard-index, matrix.shard-count) }})	0s
	16m 44s

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