centralize the type coercion code for InList rule

Do we need a common function in a new file like `in_list_rule.rs` to do the `coerce_types`?
cc @alamb @andygrove

_Originally posted by @liukun4515 in https://github.com/apache/arrow-datafusion/pull/3472#discussion_r970347546_

Start by locating the existing `coerce_types` code used by the InList rule and review the discussion linked from the original post. Determine whether a shared function belongs in a new `in_list_rule.rs` file, then confirm that the InList rule uses the centralized implementation without changing its behavior.

Written by the indexing model from the issue text.