Problem: iavl v1 pruning takes a long time #7363

Job	Run time
testground-test	48s
integration_tests (unmarked)	11m 30s
integration_tests (ibc)	15m 19s
integration_tests (ibc_rly_evm)	11m 33s
integration_tests (ibc_rly_gas)	15m 24s
integration_tests (ibc_timeout)	9m 2s
integration_tests (ibc_update_client)	10m 39s
integration_tests (ica)	17m 38s
integration_tests (gov)	7m 34s
integration_tests (upgrade)	13m 39s
integration_tests (slow)	12m 51s
integration_tests (gas)	8m 10s
upload-cache	0s
	2h 14m 7s

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