[datafusion-spark]: Implement array_repeat #19701
Description
Is your feature request related to a problem or challenge?
Implement https://spark.apache.org/docs/latest/api/sql/index.html#array_repeat equivalent of spark.
Datafusion already has an implementation of array_repeat. The difference between DF and spark implementation is the handling of NULL inputs. In spark, if any of the argument is NULL then the return value is NULL.
Describe the solution you'd like
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Describe alternatives you've considered
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Additional context
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