feat: Add a simple configurable notifications subscriber (#7331)

* feat: Add a simple configurable notifications subscriber that is configurable

* Proposal on awaiting all subscribers to run

* fix: Clean up wait subscribers util and notifications test

---------

Co-authored-by: adrien2p <adrien.deperetti@gmail.com>

packages/core/utils/src/modules-sdk/abstract-module-service-factory.ts

@@ -571,13 +571,8 @@ export function abstractModuleServiceFactory<
         // TODO: Should use ModuleRegistrationName.EVENT_BUS but it would require to move it to the utils package to prevent circular dependencies
         (key) => key === "eventBusModuleService"
       )
-      const hasEventBusService = Object.keys(this.__container__).find(
-        (key) => key === "eventBusService"
-      )
 
-      this.eventBusModuleService_ = hasEventBusService
-        ? this.__container__.eventBusService
-        : hasEventBusModuleService
+      this.eventBusModuleService_ = hasEventBusModuleService
         ? this.__container__.eventBusModuleService
         : undefined
     }