When _autoWireChatClient=true and the caller sets EnableSensitiveData=true on
the outer OpenTelemetryAgent, the auto-wired inner OpenTelemetryChatClient now
also has EnableSensitiveData propagated, so the inner chat span correctly
captures message content (gen_ai.input.messages / gen_ai.output.messages).
Red test added first to reproduce the bug, then the fix applied (green).
Fixes#5873
Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/fda69dd4-9576-4f3f-b954-514321652ea9
Co-authored-by: rogerbarreto <19890735+rogerbarreto@users.noreply.github.com>