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/License.test.ts

@@ -6,6 +6,7 @@ import { License } from '@/License';
 import { Logger } from '@/Logger';
 import { N8N_VERSION } from '@/constants';
 import { mockInstance } from '../shared/mocking';
+import { MultiMainSetup } from '@/services/orchestration/main/MultiMainSetup.ee';
 
 jest.mock('@n8n_io/license-sdk');
 
@@ -27,9 +28,10 @@ describe('License', () => {
 	let license: License;
 	const logger = mockInstance(Logger);
 	const instanceSettings = mockInstance(InstanceSettings, { instanceId: MOCK_INSTANCE_ID });
+	const multiMainSetup = mockInstance(MultiMainSetup);
 
 	beforeEach(async () => {
-		license = new License(logger, instanceSettings, mock(), mock());
+		license = new License(logger, instanceSettings, mock(), mock(), mock());
 		await license.init();
 	});
 
@@ -52,7 +54,7 @@ describe('License', () => {
 	});
 
 	test('initializes license manager for worker', async () => {
-		license = new License(logger, instanceSettings, mock(), mock());
+		license = new License(logger, instanceSettings, mock(), mock(), mock());
 		await license.init('worker');
 		expect(LicenseManager).toHaveBeenCalledWith({
 			autoRenewEnabled: false,