[INLONG-6373][Sort] Fix the time value when data type is datetime and timestamp #6403
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Motivation
fix time value when data type is datetime and timestamp
Modifications
fix time value when data type is datetime and timestamp
For timestamp, the debezium will first get the timestamp in the database time zone, and then convert it into UTC time zone.
So we only need to convert the timestamp in UTC time zone back to its origin timestamp
For zoned time stamp, we need to convert the zone time stamp using time zone set by user and the reformat the zoned timestamp into a timestamp ended with Z since flink JsonToRowDataConverters can only parse a zoned timestamp ended with UTC "Z" time zone.
Verifying this change
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This change is a trivial rework/code cleanup without any test coverage.
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Documentation