deprecate flight_data_to_arrow_batch and expose read_record_batch directly

[Rich-T-kid]

Is your feature request related to a problem or challenge?

flight_data_to_arrow_batch exists as a thin wrapper over read_record_batch. With #10206 making read_record_batch public we can now call it directly.

Describe the solution you'd like

Replace the two occurrences remaining in the codebase with read_record_batch

#10206 (comment)

Describe alternatives you've considered

N/A

Additional context

#10206

[Rich-T-kid]

take