feat: make modified an actual long #760

Job	Run time
test-fake-database	23s
test-server	20s
core (random, all-features)	26m 41s
framework (random, no-auth)	26m 14s
core (random, single-seller)	24m 37s
framework (controlled, no-auth)	11m 48s
core (random, no-payment-reconciliation)	25m 30s
core (random, no-auth)	26m 4s
core (random, no-tax-calculation)	25m 19s
core (random, prepayment-always-required)	24m 40s
core (random, facilityuse-has-slots)	25m 32s
core (controlled, all-features)	25m 33s
core (controlled, single-seller)	23m 7s
core (controlled, no-payment-reconciliation)	24m 17s
core (controlled, no-auth)	23m 7s
core (controlled, no-tax-calculation)	22m 25s
core (controlled, prepayment-always-required)	23m 2s
core (controlled, facilityuse-has-slots)	23m 29s
publish-server	0s
deploy-reference-implementation	0s
publish-fake-database	0s
	6h 22m 8s

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