openai_agents does not index prompts correctly

[tcdent]

agentios.instrumentation.openai_agents.common.get_response_span_attributes sets SpanAttributes.LLM_PROMPTS instead of the indexed MessageAtributes.PROMPT_CONENT

[Dwij1704]

@the-praxs Is this resolved in your PR for open ai agents?

[dot-agi]

Yep. Closed by #1005