* [Fix](partial-update) Fix partial update fail when the datetime default value is 'current_time' (#32926)
* Problem: When importing data that includes datetime with a default value of current time for partial column updates, the import fails.
Reason: Partial column updates do not handle the logic for datetime default values.
Solution: During partial column updates, when the default value is set to current time, read the current time from the runtime state and write it into the data.
* [Enhancement](partial update)Add timezone case for partial update timestamp #33177
* [fix](partial update) Support partial update when the date default value is 'current_date'. This PR is a extension of PR #32926. (#33394)
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