fix(stream): data block capacity

fix(tsc):avoid invalid code

fix: avg function data scan optimization

fix: fix nchar compare issue

fix: request free sequence problem

* test(docs):update docs-example file structure

* test(docs):update docs-example references under zh and en

feat(wal): auto fix corrupt file

enh: added memory allocators for parser and planner

modify checkpackages scritps of muti-platform tes

test: modify checkpackages scritps of muti-platform test

test:add testcase of data Compatibility

docs: release 3.0.1.2

fix(stream): free array

enh(tdb): more debug output for page's overflow cells

Merge pull request #16973 from taosdata/fix/ZhiqiangWang/TD-19048-taos-shell-websocket-reconnect-error

shell: taos shell websocket reconnect error

fix: core in case of null args with taos -c dir/ -R

fix(stream): check delete uid