fix(query): fix filterInfo->cunit not allocated caused crash

fix: support taosd -u with default dataDir

fix: null check for timestamp

fix: primary disk for taosd -u

enh: support taosd -u

fix: add test case for update 2

fix: force set null logic for row

fix: core dump due to assert reallocation result when reallocate fails

fix(client):taosAdapter core

fix: update schema version when modify column width of normal table

fix: set timestamp precision of query in tscCreateQueryFromQueryInfo

fix(query): fix issues found by Coverity Scan in qExecutor.c in 2.4

fix: update parallel_test/cases.task

fix(rpc): add debug log

enh: guard against possible nullptrs of subquery objs in SSqlObj pSubs additionally

fix: change the size limit of sql stmt rebuilt for show create table to TSDB_MAX_SQL_LEN

fix: synchronize initialization, access, and destruction of subqueries and their states