Update model parameter type in Session for better compatibility with recently released models #2593
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syncing with Agents SDK (https://github.com/openai/openai-agents-python/blob/main/src/agents/realtime/config.py), enabling the session model config to accept models that are not pre-specified (e.g., gpt-4o-realtime-preview-2025-08-12, gpt-realtime).
Changes being requested
model param type update in Session
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