Co-authored-by: Nfacetosea <25808407@qq.com>

enh: improve unit tests

docs: update default trigger mode

merge from main to 3.0

* java connector support get table vgid

* add export to com_taosdata_jdbc_TSDBJNIConnector.h

test:add testcase of mnode clusters

fix: fix mem leak

fix: avoid double-free in usedb req while db in creating state

fix(tdb): rollback in-memory pages

fix: disable insert csv statements on cloud services

docs: update schemaless api for ttl

feat(query): add _isfilled pseudocolumn to indicate data is origin 

* fix: update taos-tools 45eef77

* fix: update taos-tools 8376384

* fix: taosbenchmark disorder sample

* test: remove deprecated param

* fix: update taos-tools 83515dc

* fix: examples/c/asyncdemo.c compile error

fix(query): fix error.

* fix: taosbenchmark delay time for windows

* test: remove taosbenchmark deprecated paramter

* fix: update taos-tools 261fcca

test: add test case for leastsquares

doc: update 04-stable.md

enh: tsma support first/last/count functions