Fix should_run_vertex method to remove vertex_id from vertices_to_run list

src/backend/langflow/api/v1/chat.py

@@ -128,6 +128,7 @@ async def build_vertex(
             next_vertices_ids = [
                 v for v in next_vertices_ids if graph.should_run_vertex(v)
             ]
+
             result_data_response = ResultDataResponse(**result_dict.model_dump())
 
         except Exception as exc:

src/backend/langflow/graph/graph/base.py

@@ -787,7 +787,10 @@ class Graph:
 
     def should_run_vertex(self, vertex_id: str) -> bool:
         """Returns whether a component should be run."""
-        return vertex_id in self.vertices_to_run
+        should_run = vertex_id in self.vertices_to_run
+        if should_run:
+            self.vertices_to_run.remove(vertex_id)
+        return should_run
 
     def sort_interface_components_first(
         self, vertices_layers: List[List[str]]