[fix](function) add time type in conditional-functions (#41270)

[Mryange]

#41270
before

mysql [(none)]>select sec_to_time(time_to_sec(cast('2024-09-24 16:00:00' as varchar)));
+---------------------------------------------------------------------------------------+
| sec_to_time(time_to_sec(cast(cast('2024-09-24 16:00:00' as VARCHAR(65533)) as TIME))) |
+---------------------------------------------------------------------------------------+
| 16:00:00 |
+---------------------------------------------------------------------------------------+
mysql [(none)]>select ifnull(sec_to_time(time_to_sec(cast('2024-09-24 16:00:00' as varchar))), cast(300 as time));
+--------------------------------------------------------------------------------------------------------------------------------------------------+
| ifnull(cast(sec_to_time(time_to_sec(cast(cast('2024-09-24 16:00:00' as VARCHAR(65533)) as TIME))) as DOUBLE), cast(cast(300 as TIME) as DOUBLE)) |
+--------------------------------------------------------------------------------------------------------------------------------------------------+
| 57600000000 |
+--------------------------------------------------------------------------------------------------------------------------------------------------+

now

mysql [(none)]>select ifnull(sec_to_time(time_to_sec(cast('2024-09-24 16:00:00' as varchar))), cast(300 as time));
+------------------------------------------------------------------------------------------------------------------+
| ifnull(sec_to_time(time_to_sec(cast(cast('2024-09-24 16:00:00' as VARCHAR(65533)) as TIME))), cast(300 as TIME)) |
+------------------------------------------------------------------------------------------------------------------+
| 16:00:00 |
+------------------------------------------------------------------------------------------------------------------+

Proposed changes

Issue Number: close #xxx

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[Mryange]

run buildall

[Mryange]

run buildall

[Mryange]

run buildall

[Mryange]

run external

[github-actions]

We're closing this PR because it hasn't been updated in a while.
This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable.
If you'd like to revive this PR, please reopen it and feel free a maintainer to remove the Stale tag!