fix(core-flows): export updateTaxRegionsStep #35100

Job	Run time
setup	2m 36s
Shard (0) HTTP Integration Tests	11m 51s
Shard (0) Unit Tests	8m 35s
Shard (1) HTTP Integration Tests	8m 18s
Shard (1) Unit Tests	5m 2s
Shard (0) Module Integration Tests	10m 25s
Shard (1) Module Integration Tests	9m 7s
integration-tests-packages	12m 28s
unit-tests	1s
integration-tests-modules	1s
integration-tests-http	1s
	1h 8m 25s

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