Add _run_config attribute to trace classes

Author: DanielHashmi

src/agents/tracing/traces.py

@@ -97,7 +97,7 @@ def start(self, mark_as_current: bool = False):
     def finish(self, reset_current: bool = False):
         if reset_current and self._prev_context_token is not None:
             Scope.reset_current_trace(self._prev_context_token)
-        self._prev_context_token = None
+            self._prev_context_token = None
 
     @property
     def trace_id(self) -> str:
@@ -167,7 +167,7 @@ def finish(self, reset_current: bool = False):
         self._processor.on_trace_end(self)
         if reset_current and self._prev_context_token is not None:
             Scope.reset_current_trace(self._prev_context_token)
-        self._prev_context_token = None
+            self._prev_context_token = None
 
     def __enter__(self) -> Trace:
         if self._started: