wen_restart: Change HeaviestFork stage to a leader based approach. #11276

Job	Run time
check	3m 47s
cargo-test-sbf (token/program)	9m 45s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	18m 42s
test (single-pool/cli, single-pool/program)	17m 56s
test (token-upgrade/cli, token-upgrade/program)	16m 41s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	13m 14s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	12m 5s
cargo-test-sbf (token-upgrade/program)	9m 35s
cargo-test-sbf (feature-proposal/program)	7m 13s
cargo-test-sbf (governance/addin-mock/program, governance/program)	10m 27s
cargo-test-sbf (memo/program)	12m 30s
cargo-test-sbf (name-service/program)	9m 52s
cargo-test-sbf (stake-pool/program)	13m 15s
cargo-test-sbf (single-pool/program)	7m 39s
	2h 42m 41s

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