fix: #2940 emit RealtimeHistoryUpdated when transcript_delta updates history#2977

nileshpatil6 wants to merge 2 commits intoopenai:mainopenai/openai-agents-python:mainfrom

nileshpatil6:fix/realtime-history-updated-transcript-deltanileshpatil6/openai-agents-python:fix/realtime-history-updated-transcript-deltaCopy head branch name to clipboard