Lorenze/emphemeral tracing (#3323)

* for ephemeral traces

* default false

* simpler and consolidated

* keep raising exception but catch it and continue if its for trace batches

* cleanup

* more cleanup

* not using logger

* refactor: rename TEMP_TRACING_RESOURCE to EPHEMERAL_TRACING_RESOURCE for clarity and consistency in PlusAPI; update related method calls accordingly

* default true

* drop print

src/crewai/flow/flow.py

@@ -38,7 +38,10 @@ from crewai.utilities.events.flow_events import (
 from crewai.utilities.events.listeners.tracing.trace_listener import (
     TraceCollectionListener,
 )
-from crewai.utilities.events.listeners.tracing.utils import is_tracing_enabled
+from crewai.utilities.events.listeners.tracing.utils import (
+    is_tracing_enabled,
+    on_first_execution_tracing_confirmation,
+)
 from crewai.utilities.printer import Printer
 
 logger = logging.getLogger(__name__)
@@ -476,8 +479,12 @@ class Flow(Generic[T], metaclass=FlowMeta):
         # Initialize state with initial values
         self._state = self._create_initial_state()
         self.tracing = tracing
-        if is_tracing_enabled() or tracing:
-            trace_listener = TraceCollectionListener(tracing=tracing)
+        if (
+            on_first_execution_tracing_confirmation()
+            or is_tracing_enabled()
+            or self.tracing
+        ):
+            trace_listener = TraceCollectionListener()
             trace_listener.setup_listeners(crewai_event_bus)
         # Apply any additional kwargs
         if kwargs: