Missing empty list check in array filter function

[saurabh-somani-philips]

multik/multik-core/src/commonMain/kotlin/org/jetbrains/kotlinx/multik/ndarray/operations/IteratingNDArray.kt

Line 350 in 24c4181

val dtype = DataType.of(list.first())

list.first() is referenced without checking if the list is empty or not. Causes the execution to crash.