v1.18: fix: send votes to the immediate next leader (backport of #2607) #9117

Job	Run time
test	0s
check	0s
cargo-test-sbf (token/program)	8m 50s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 40s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 58s
cargo-test-sbf (token-upgrade/program)	9m 41s
cargo-test-sbf (feature-proposal/program)	9m 25s
cargo-test-sbf (governance/addin-mock/program, governance/program)	12m 46s
cargo-test-sbf (memo/program)	8m 39s
cargo-test-sbf (name-service/program)	8m 48s
cargo-test-sbf (stake-pool/program)	13m 18s
cargo-test-sbf (single-pool/program)	10m 8s
	1h 46m 13s

Provide feedback