Fix time getter methods#1

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jhmannok wants to merge 6 commits intomainfrom

fix-time-getter-methods

Commits on Jul 5, 2023

Commits on Jul 6, 2023

- Refactored duplicate code in ArrowFlightJdbcTimeStampVectorAccessorTest
jhmannok
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- renamed compareOffset to a more descriptive name
jhmannok
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Commits on Jul 24, 2023

ArrowFlightJdbcTimeStampVectorAccessor: Made assigning to sourceTimeZone an if statement and changed all nonNull usage to compare with null explicitly
jhmannok
committed

Commits on Aug 9, 2023

Refactored getLongToUTCDateTimeForVector
jhmannok
committed