Enh/rocksdb sstate merge dev3

merge main into 3.0 branch.

docs(driver):  fix jdbc error code

fix: kafka connector doc issues

invalid message

test:add testcases of learner in election

fix: bypass projection pruning if union set op and subquery

enh: error code optimization

fix(tq): set the offset to be the consume offset, instead of the committed offset. And update the table sim.

fix: func ctgHandleGetTbMetasRsp invalid read SName

fix:[TD-24111]avoid exec pHandle task in multi query thread

Update 04-stable.md