Optimize array_concat to use MutableArrayData #20619
Description
Is your feature request related to a problem or challenge?
The current array_concat implementation does a lot of unnecessary copying, and calls the Arrow concat kernel twice. This could be simplified, following a similar approach to that used in #19996 for array_remove -- read list offsets directly and use MutableArrayData::extend() to copy element ranges in bulk
Describe the solution you'd like
No response
Describe alternatives you've considered
No response
Additional context
No response