Add future resolutuion to output

Author: dandavison

tests/nexus/test_workflow_caller_cancellation_types.py

@@ -331,7 +331,16 @@ async def check_behavior_for_try_cancel(
     assert handler_status == WorkflowExecutionStatus.CANCELED
     caller_op_future_resolved = test_context.caller_op_future_resolved.result()
 
-    await print_interleaved_histories([caller_wf, handler_wf])
+    await print_interleaved_histories(
+        [caller_wf, handler_wf],
+        extra_events=[
+            (
+                caller_wf,
+                "Caller op future resolved",
+                caller_op_future_resolved,
+            )
+        ],
+    )
 
     await assert_event_subsequence(
         [

tests/nexus/test_workflow_caller_cancellation_types_when_cancel_handler_fails.py

@@ -302,7 +302,16 @@ async def check_behavior_for_try_cancel(
     assert result.error_cause_type == "CancelledError"
 
     caller_op_future_resolved = test_context.caller_op_future_resolved.result()
-    await print_interleaved_histories([caller_wf, handler_wf])
+    await print_interleaved_histories(
+        [caller_wf, handler_wf],
+        extra_events=[
+            (
+                caller_wf,
+                "Caller op future resolved",
+                caller_op_future_resolved,
+            )
+        ],
+    )
 
     await assert_event_subsequence(
         [