[SPARK-56874][SQL] Fast-path `DateTimeUtils.daysToMicros` for `ZoneOffset.UTC`#55893

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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 21, Scala 2.13, split 1 of 1)
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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 25, Scala 2.13, split 1 of 1)
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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 17, Scala 2.13, split 1 of 1)
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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 17, Scala 2.13, split 1 of 1)
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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 21, Scala 2.13, split 1 of 1)
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Benchmark results for org.apache.spark.sql.execution.datasources.parquet.ParquetVectorUpdaterBenchmark (JDK 25, Scala 2.13, split 1 of 1)
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