Refactor: merge send-progress methods #2699

Job	Run time
openraft-test-bench (nightly)	50s
openraft-test (stable, 0)	44s
openraft-test (nightly, 30)	48s
Build (nightly, bench,serde,bt,singlethreaded)	47s
openraft-test (nightly, 0, single-term-leader)	46s
cluster-benchmark (cluster_benchmark)	42s
examples (stable, memstore)	33s
examples (stable, raft-kv-memstore)	1m 13s
external-stores (stores/rocksstore-v2)	6m 14s
examples (stable, raft-kv-memstore-generic-snapshot-data)	45s
examples (stable, raft-kv-memstore-opendal-snapshot-data)	1m 13s
lint	16s
examples (stable, raft-kv-memstore-singlethreaded)	49s
examples (stable, raft-kv-rocksdb)	6m 23s
openraft-feature-test (nightly)	45s
examples (nightly, memstore)	44s
stores (memstore)	43s
openraft-feature-test (nightly, serde)	45s
examples (nightly, raft-kv-memstore)	1m 13s
stores (rocksstore)	5m 55s
openraft-feature-test (nightly, single-term-leader)	44s
stores (sledstore)	52s
examples (nightly, raft-kv-memstore-generic-snapshot-data)	55s
tests-feature-test (nightly)	50s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	46s
tests-feature-test (nightly, single-term-leader)	49s
examples (nightly, raft-kv-memstore-opendal-snapshot-data)	1m 20s
tests-feature-test (nightly, loosen-follower-log-revert)	48s
examples (nightly, raft-kv-memstore-singlethreaded)	57s
examples (nightly, raft-kv-rocksdb)	6m 47s
	46m 56s

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