This kernel lacks support for variable-width types. It should probably also directly handle dictionaries, and it may be a good opportunity to look at optimization as well.

Reporter: David Li / @lidavidm

Related issues:

• [C++] replace_with_mask support missing for list/fixed_size_list/large_list/struct (duplicates)
• [C++] Reconcile type promotion rules between if_else, case_when, coalesce, select (relates to)
• [C++] Improve type support for 'coalesce' kernel (relates to)

_{Note: This issue was originally created as ARROW-14172. Please see the migration documentation for further details.}