fix: changed TaskHandlerId of Discovery.discoverVertexHandlerId to …

…no longer use the `name` property of the handler function due to #453

src/discovery/Discovery.ts

@@ -141,7 +141,7 @@ class Discovery {
  }
  };
  public readonly discoverVertexHandlerId =
- `${this.constructor.name}.${this.discoverVertexHandler.name}.discoverVertexHandlerId` as TaskHandlerId;
+ `${this.constructor.name}.discoverVertexHandler` as TaskHandlerId;
 
  public constructor({
  keyRing,