Fix: Split serde bound for `RaftError` into serialize and deserialize #2943

Job	Run time
Build (nightly, bench,serde,bt,singlethreaded)	49s
openraft-test (stable, 0)	2m 58s
openraft-test (nightly, 30)	3m 9s
cluster-benchmark (cluster_benchmark)	2m 27s
openraft-test (nightly, 0, single-term-leader)	3m 7s
examples (stable, raft-kv-memstore)	2m 17s
examples (stable, raft-kv-memstore-singlethreaded)	1m 3s
lint	6m 32s
external-stores (stores/rocksstore-v2)	6m 9s
examples (stable, raft-kv-rocksdb)	7m 49s
examples (nightly, raft-kv-memstore)	2m 8s
examples (nightly, raft-kv-memstore-singlethreaded)	1m 20s
openraft-feature-test (nightly)	50s
openraft-test-bench (nightly)	56s
openraft-feature-test (nightly, serde)	52s
examples (nightly, raft-kv-rocksdb)	12m 0s
openraft-feature-test (nightly, single-term-leader)	52s
tests-feature-test (nightly)	2m 46s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	48s
stores (memstore)	43s
tests-feature-test (nightly, single-term-leader)	2m 44s
stores (rocksstore)	6m 11s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 42s
stores (rocksstore-compat07)	6m 0s
stores (sledstore)	52s
	1h 18m 4s

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