Azure AI agentserver flips default trace sampling to 100% and turns HTTP library instrumentation off

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azure-ai-agentserver-core 2.2.0b1, published 2026-09-04 for a 2026-09-03 cut, changes the default Azure Monitor trace sampling rate to 100% while letting explicit OpenTelemetry sampler environment variables win, and disables Azure SDK, HTTPX, Requests, urllib and urllib3 instrumentation by default behind an instrumentation_options argument to configure_observability. The companion invocations 1.2.0b1 adds W3C voice connection tracing with a single agentserver.connection span, content-free voice.callback dispatch spans, and application-declared target-turn tracing via Session.start_target_turn and explicit TargetTurn.complete outcomes, explicitly refusing to infer response lifecycle on the application's behalf.