pick memcpy alignement and datetime related pr to 4.1#61620

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yiguolei merged 3 commits intoapache:branch-4.1from

yiguolei:branch-4.1

Mar 23, 2026

Commits on Mar 23, 2026

[Improvement](memcpy) use assume_aligned to hint aligned memcpy (#60695)

BiteTheDDDDt
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yiguolei
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[enhancement](zonemap) add beut for olap string convertor for zonemap (#61277)
yiguolei
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[bugfix](zonemap string) datetimev2 should always using scale 6 to produce string (#61529)
yiguolei
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