Addressed additional pre-coimmit finding.

Author: vkruglik-aka

src/xdist/scheduler/isoscope.py

@@ -330,7 +330,9 @@ def remove_node(self, node: WorkerController) -> str | None:
         return crashed_test_id
 
     def add_node_collection(
-        self, node: WorkerController, collection: Sequence[str]
+        self,
+        node: WorkerController,
+        collection: Sequence[str]
     ) -> None:
         """Register the collected test items from a Remote Worker node.
 
@@ -443,7 +445,10 @@ def add_node_collection(
             self._workset_queue.add_test(test)
 
     def mark_test_complete(
-        self, node: WorkerController, item_index: int, duration: float
+        self,
+        node: WorkerController,
+        item_index: int,
+        duration: float = 0
     ) -> None:
         """Mark test item as completed by node and remove from pending tests
         in the worker and reschedule.