[branch-2.1](function) fix FE impl of some time functions (#37746) (#38316)
pick https://github.com/apache/doris/pull/37746
before:
```sql
mysql> select date_ceil("2020-12-12 12:12:12.123", interval 2 second);
+-----------------------+
| '2020-12-12 12:12:12' |
+-----------------------+
| 2020-12-12 12:12:12 |
+-----------------------+
1 row in set (0.10 sec)
mysql> select CONVERT_TZ('9999-12-31 23:59:59.999999', 'Pacific/Galapagos', 'Pacific/Galapagos');
+------+
| NULL |
+------+
| NULL |
+------+
1 row in set (0.09 sec)
mysql [(none)]>select CONVERT_TZ('9999-12-31 23:59:59.999999', 'Pacific/Galapagos', 'Pacific/GalapaGoS');
+-----------------------------------------------------------------------------------------------------------+
| convert_tz(cast('9999-12-31 23:59:59.999999' as DATETIMEV2(6)), 'Pacific/Galapagos', 'Pacific/GalapaGoS') |
+-----------------------------------------------------------------------------------------------------------+
| 9999-12-31 23:59:59.999999 |
+-----------------------------------------------------------------------------------------------------------+
1 row in set (0.08 sec) --- gone to BE
```
after:
```sql
mysql> select date_ceil("2020-12-12 12:12:12.123", interval 2 second);
+------------------------------+
| '2020-12-12 12:12:14.000000' |
+------------------------------+
| 2020-12-12 12:12:14 |
+------------------------------+
1 row in set (0.11 sec)
mysql> select CONVERT_TZ('9999-12-31 23:59:59.999999', 'Pacific/Galapagos', 'Pacific/Galapagos');
+-----------------------------------------------------------------------------------------------------------+
| convert_tz(cast('9999-12-31 23:59:59.999999' as DATETIMEV2(6)), 'Pacific/Galapagos', 'Pacific/Galapagos') |
+-----------------------------------------------------------------------------------------------------------+
| 9999-12-31 23:59:59.999999 |
+-----------------------------------------------------------------------------------------------------------+
1 row in set (0.23 sec)
mysql> select CONVERT_TZ('9999-12-31 23:59:59.999999', 'Pacific/Galapagos', 'Pacific/GalapaGoS');
+------------------------------+
| '9999-12-31 23:59:59.999999' |
+------------------------------+
| 9999-12-31 23:59:59.999999 |
+------------------------------+
1 row in set (0.11 sec) --- finished in FE
```