message: event source connector drop target should only be knative service
diff: @@ -17,7 +17,7 @@ import {
  EdgeComponentProps,
  EditableDragOperationType,
  } from '@console/dev-console/src/components/topology';
  -import { TYPE_EVENT_SOURCE_LINK } from '../const';
  +import { TYPE_EVENT_SOURCE_LINK, TYPE_KNATIVE_SERVICE } from '../const';
  import { createSinkConnection } from '../knative-topology-utils';
  export const MOVE_EV_SRC_CONNECTOR_OPERATION = 'moveeventsourceconnector';
  @@ -30,6 +30,7 @@ export const nodesEdgeIsDragging = (monitor, props) =>
  export const canDropEventSourceSinkOnNode = (operation: string, edge: Edge, node: Node): boolean =>
  edge.getSource() !== node &&
  + node.getType() === TYPE_KNATIVE_SERVICE &&
  operation === MOVE_EV_SRC_CONNECTOR_OPERATION &&
  !node.getTargetEdges().find((e) => e.getSource() === edge.getSource());
  