Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Per #3389 dictionaries are not supported over flight and right now they are cast into their underlying value type array.

Describe the solution you'd like
In lieu of the solution described on #3389 to provide initial support for dictionary arrays we can have opt in behavior to always send dictionaries with each record batch, replacing the previous

Describe alternatives you've considered
n/a

Additional context
n/a