[C++] Update handling of UUID type in Substrait integration #43856
Description
Describe the enhancement requested
Now that UUID is a canonical extension type (#41299) and has native support in C++ (#37298), I think we should change how UUID fields are handled in the Substrait integration. See these two files:
cpp/src/arrow/engine/substrait/extension_types.hcpp/src/arrow/engine/substrait/extension_types.cc
Component(s)
C++