feat(core): Coordinate manual workflow activation and deactivation in multi-main scenario (#7643)

Followup to #7566 | Story: https://linear.app/n8n/issue/PAY-926

### Manual workflow activation and deactivation

In a multi-main scenario, if the user manually activates or deactivates
a workflow, the process (whether leader or follower) that handles the
PATCH request and updates its internal state should send a message into
the command channel, so that all other main processes update their
internal state accordingly:

- Add to `ActiveWorkflows` if activating
- Remove from `ActiveWorkflows` if deactivating
- Remove and re-add to `ActiveWorkflows` if the update did not change
activation status.

After updating their internal state, if activating or deactivating, the
recipient main processes should push a message to all connected
frontends so that these can update their stores and so reflect the value
in the UI.

### Workflow activation errors

On failure to activate a workflow, the main instance should record the
error in Redis - main instances should always pull activation errors
from Redis in a multi-main scenario.

### Leadership change

On leadership change...

- The old leader should stop pruning and the new leader should start
pruning.
- The old leader should remove trigger- and poller-based workflows and
the new leader should add them.

packages/cli/test/unit/services/orchestration.service.test.ts

@@ -1,6 +1,6 @@
 import Container from 'typedi';
 import config from '@/config';
-import { SingleMainInstancePublisher } from '@/services/orchestration/main/SingleMainInstance.publisher';
+import { SingleMainSetup } from '@/services/orchestration/main/SingleMainSetup';
 import type { RedisServiceWorkerResponseObject } from '@/services/redis/RedisServiceCommands';
 import { eventBus } from '@/eventbus';
 import { RedisService } from '@/services/redis.service';
@@ -10,10 +10,13 @@ import { OrchestrationHandlerMainService } from '@/services/orchestration/main/o
 import * as helpers from '@/services/orchestration/helpers';
 import { ExternalSecretsManager } from '@/ExternalSecrets/ExternalSecretsManager.ee';
 import { Logger } from '@/Logger';
+import { Push } from '@/push';
+import { ActiveWorkflowRunner } from '@/ActiveWorkflowRunner';
 import { mockInstance } from '../../shared/mocking';
 
-const os = Container.get(SingleMainInstancePublisher);
+const os = Container.get(SingleMainSetup);
 const handler = Container.get(OrchestrationHandlerMainService);
+mockInstance(ActiveWorkflowRunner);
 
 let queueModeId: string;
 
@@ -33,6 +36,7 @@ const workerRestartEventbusResponse: RedisServiceWorkerResponseObject = {
 
 describe('Orchestration Service', () => {
 	const logger = mockInstance(Logger);
+	mockInstance(Push);
 	beforeAll(async () => {
 		mockInstance(RedisService);
 		mockInstance(ExternalSecretsManager);