Describe the enhancement requested

These recent Flight RPC improvements weren't exposed to Python:

• [C++][Java][FlightRPC] Add support for ordered data #34852
• [C++][FlightRPC] Add arrow::flight::ServerCallContext::incoming_headers() #35375
• [C++][FlightRPC] Add a ServerCallContext parameter to arrow::flight::ServerAuthHandler methods #35377
• [C++][FlightRPC] Pass ServerCallContext instead of CallHeaders to ServerMiddlewareFactory::StartCall() #35442
• [C++][Go][Java][FlightRPC] Add support for result set expiration #35500
• [C++][Go][Java][FlightRPC] Add support for long-running queries #36155
• app_metadata in FlightEndpoint/FlightInfo

Component(s)

FlightRPC, Python