fix(task-graph): ensure graph node keys and event payload keys match

In the dashboard, we match the keys emitted with the event payload
against the node keys returned by the get graph command.

This commit adds a generic makeBaseKey function that both the Task
classes and the config graph render function use.

Previously we emitted the task key, as opposed to just the base key.

dashboard/src/api/types.ts

@@ -84,7 +84,12 @@ export interface FetchConfigResponse {
   moduleConfigs: ModuleConfig[]
 }
 
-export type RenderedNode = { type: RenderedNodeType, name: string }
+export type RenderedNode = {
+  type: RenderedNodeType,
+  name: string,
+  key: string,
+  moduleName: string,
+}
 
 export type RenderedNodeType = "build" | "deploy" | "run" | "test" | "push" | "publish"