Describe the bug

Spark named_struct expression doesn't forbid duplicate field names. Comet named_struct implementation follows Spark.
However, Java Arrow when importing arrays, it binds arrays by field name. So if you have a struct array with duplicate field names, an error like this will be thrown:

  org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 5959.0 failed 1 times, most recent failure: Lost task 0.0 in stage 5959.0 (TID 15003) (192.168.86.44 executor driver): java.lang.IllegalStateExcep
tion: ArrowArray struct has 2 children (expected 1)                                                                

Steps to reproduce

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Expected behavior

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Additional context

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