Hotfix/sangshuduo/td 5872 taosdemo stmt improve for master (#7868)

* cherry pick from develop branch.

* cherry pick 54813175

* [TD-5872]<fix>: taosdemo stmt csv perf improve.

* rand func back to early impl.

* fix windows/mac compile error.

* cherry pick from develop branch.

* merge with develop branch.

* rename MAX_SAMPLES_ONCE_FROM_FILE to reflect reality.

* split func for stmt interlace.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

tests/pytest/tools/taosdemoAllTest/insertInterlaceRowsLarge1M.json

@@ -41,7 +41,7 @@
             "batch_create_tbl_num": 10,
             "data_source": "rand",
             "insert_mode": "taosc",
-            "insert_rows": 1000,
+            "insert_rows": 1001,
             "childtable_limit": 0,
             "childtable_offset":0,
             "multi_thread_write_one_tbl": "no",