[TieredStorage] rent_epoch() returns 0 for zero-lamport accounts (#35… #7989

Job	Run time
test	0s
cargo-test-sbf (token/program)	7m 59s
check	0s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	13m 28s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	8m 50s
cargo-test-sbf (token-upgrade/program)	9m 6s
cargo-test-sbf (feature-proposal/program)	7m 28s
cargo-test-sbf (governance/addin-mock/program, governance/program)	14m 31s
cargo-test-sbf (memo/program)	7m 35s
cargo-test-sbf (name-service/program)	6m 50s
cargo-test-sbf (stake-pool/program)	10m 47s
cargo-test-sbf (single-pool/program)	9m 12s
	1h 35m 46s

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