Refactor: remove `OrdBy` #4409

Job	Run time
test-crate-tests (stable, 0)	3m 6s
openraft-test-bench (nightly)	58s
Build (nightly, bench,serde,bt,singlethreaded)	57s
test-crate-tests (nightly, 30)	3m 16s
cluster-benchmark (cluster_benchmark)	49s
test-crate-tests (nightly, 0, single-term-leader)	3m 3s
examples (stable, memstore)	43s
examples (stable, rocksstore)	6m 3s
lint	3m 58s
openraft-feature-test (nightly)	51s
examples (stable, raft-kv-memstore)	2m 43s
openraft-feature-test (nightly, serde)	52s
examples (stable, raft-kv-memstore-grpc)	1m 57s
rt-monoio	44s
openraft-feature-test (nightly, serde,singlethreaded)	57s
examples (stable, raft-kv-memstore-network-v2)	49s
examples (stable, raft-kv-memstore-opendal-snapshot-data)	1m 6s
test-crate-openraft (stable)	48s
examples (stable, raft-kv-memstore-singlethreaded)	59s
stores (stores/memstore)	54s
examples (stable, raft-kv-rocksdb)	7m 31s
examples (nightly, memstore)	59s
test-crate-openraft (nightly)	50s
examples (nightly, rocksstore)	11m 3s
tests-feature-test (nightly)	3m 3s
examples (nightly, raft-kv-memstore)	2m 27s
tests-feature-test (nightly, single-term-leader)	3m 3s
examples (nightly, raft-kv-memstore-grpc)	1m 55s
examples (nightly, raft-kv-memstore-network-v2)	1m 13s
examples (nightly, raft-kv-memstore-opendal-snapshot-data)	1m 32s
examples (nightly, raft-kv-memstore-singlethreaded)	1m 10s
examples (nightly, raft-kv-rocksdb)	11m 44s
	1h 22m 3s

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