fix(csharp/src/Drivers/BigQuery): return null on GetValue exception #1562
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In a query such as
SELECT * FROM bigquery-public-data.fhir_synthea.explanation_of_benefit, a number of items return null inside of the StructArray result. An exception is thrown from the underlying Arrow calls because we hit a scenario where Length and index are both 0, so anArgumentOutOfRangeExceptionis thrown per https://github.com/apache/arrow/blob/280bc112b23976d2f17c07c638bb62702ac89e8a/csharp/src/Apache.Arrow/Arrays/BinaryArray.cs#L356.