fix:[TS-3250] change strtegy in schemaless if modifyDBSchema error

fix:[TS-3082] change offset to firstver if offset is smller than firs…

fix(stream): set the correct number of tasks.

fix: do not performace table count scan optimized where there are no agg functions

add the cast that select field include two udf function

enh(stream): add more check to stop stream asap.

fix(stream): add lock during check wal to create new stream task.

fix: invalid identifier check

ci: enable Jemalloc in compilation

test: add cases for TS-3150

test: modify test case

test:add testcase of compatibility.py for TS-3209