Update tracing_metrics_recording::record_export_success() method signature to require processor arg

Author: james-cardenas

src/agentex/lib/core/observability/tests/test_tracing_metrics_recording.py

@@ -114,7 +114,7 @@ def test_record_export_success(self, monkeypatch):
             "agentex.lib.core.observability.tracing_metrics.get_tracing_metrics",
             return_value=mock_metrics,
         ):
-            recording.record_export_success(event_type="end", span_count=12)
+            recording.record_export_success(event_type="end", span_count=12, processor="sgp")
 
         mock_metrics.export_batches.add.assert_called_once_with(
             1,

src/agentex/lib/core/observability/tracing_metrics_recording.py

@@ -102,7 +102,7 @@ def record_batch_phase(*, phase: str, size: int, duration_ms: float) -> None:
         pass
 
 
-def record_export_success(*, event_type: str, span_count: int, processor: str = "sgp") -> None:
+def record_export_success(*, event_type: str, span_count: int, processor: str) -> None:
     if not is_metrics_enabled():
         return
     try: