refactor: refactor to avoid spin operator in exchange operator.

reafct: adjust sync propose

release: build 3.0.1.6 (merge from main to 3.0)

docs: add case expressions

test：modify testcase that reduce numbers of db and  repetitions

fix: avoid cpu load imbalance 

refact: adjust sync log

refactor(sync): delete assert, add error log

perf: optimize block data operation

enh: insert optimize

fix(sync): when apply queue not empty, can not read

enh: support grant check in vnode query