Remove plugin key from Backstage route object.

Signed-off-by: Eric Peterson <ericpeterson@spotify.com>

packages/core-app-api/src/routing/collectors.tsx

@@ -334,10 +334,6 @@ export const routingV1Collector = createCollector(
               'core.plugin',
             ),
           ),
-          plugin: getComponentData<BackstagePlugin>(
-            node.props.element,
-            'core.plugin',
-          ),
         };
         parentChildren.push(currentObj);
       } else {
@@ -364,8 +360,7 @@ export const routingV1Collector = createCollector(
           element: 'gathered',
           routeRefs: new Set(),
           children: [MATCH_ALL_ROUTE],
-          plugins: pluginSet(ctx?.obj?.plugin),
-          plugin: ctx?.obj?.plugin,
+          plugins: ctx?.obj?.plugins || new Set(),
         };
         parentChildren.push(currentObj);
       }

packages/core-app-api/src/routing/types.ts

@@ -55,7 +55,6 @@ export interface BackstageRouteObject {
   path: string;
   routeRefs: Set<RouteRef>;
   plugins: Set<BackstagePlugin>;
-  plugin?: BackstagePlugin;
 }
 
 export function isRouteRef<Params extends AnyParams>(

packages/core-plugin-api/src/analytics/Tracker.ts

@@ -85,13 +85,16 @@ export class Tracker implements AnalyticsTracker {
 
     // Never fire the special "_routable-extension-rendered" internal event.
     if (action === routableExtensionRenderedEvent) {
-      // Instead, set it on the global store.
-      globalEvents.mostRecentRoutableExtensionRender = {
-        context: {
-          ...context,
-          extension: 'App',
-        },
-      };
+      // But keep track of it if we're delaying a `navigate` event for a
+      // a gathered route node type.
+      if (globalEvents.mostRecentGatheredNavigation) {
+        globalEvents.mostRecentRoutableExtensionRender = {
+          context: {
+            ...context,
+            extension: 'App',
+          },
+        };
+      }
       return;
     }