refactor(core): Make workflow services injectable (no-changelog) (#8033)

Refactor static workflow service classes into DI-compatible classes

Context: https://n8nio.slack.com/archives/C069HS026UF/p1702466571648889

Up next:
- Inject dependencies into workflow services
- Consolidate workflow controllers into one
- Make workflow controller injectable
- Inject dependencies into workflow controller

---------

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/test/integration/publicApi/workflows.test.ts

@@ -7,7 +7,7 @@ import type { TagEntity } from '@db/entities/TagEntity';
 import type { User } from '@db/entities/User';
 import { SharedWorkflowRepository } from '@db/repositories/sharedWorkflow.repository';
 import { WorkflowHistoryRepository } from '@db/repositories/workflowHistory.repository';
-import type { ActiveWorkflowRunner } from '@/ActiveWorkflowRunner';
+import { ActiveWorkflowRunner } from '@/ActiveWorkflowRunner';
 
 import { randomApiKey } from '../shared/random';
 import * as utils from '../shared/utils/';
@@ -43,7 +43,10 @@ beforeAll(async () => {
 	});
 
 	await utils.initNodeTypes();
-	workflowRunner = await utils.initActiveWorkflowRunner();
+
+	workflowRunner = Container.get(ActiveWorkflowRunner);
+
+	await workflowRunner.init();
 });
 
 beforeEach(async () => {