fix:core dump in tsdbreader is null when tsdbreader is closed by subscribe msg and current offset equal to saved

fix(stream): add some logs and set the wal offset to be the ended version when finishing the step2 recover stage.

fix: add on conditions null check and rightRowLocations no longer hides the outer scope rightRowLocations

fix: using right rows to build hash table when the tag equal cond is not null and same ts row row number is greater than 16

fix: select <expr1>, <expr1##sth else> from ... return error data when strlen(expr1) > TSDB_COL_NAME_LEN