refactor: Delete a lot of unused and duplicate code in Server and WebhookServer (#5080)

* store n8n version string in a const and use that everywhere

* reduce code duplication between Server and WebhookServer

* unify redis checks

* fix linting

packages/cli/src/ActiveWorkflowRunner.ts

@@ -76,6 +76,10 @@ export class ActiveWorkflowRunner {
 		[key: string]: IQueuedWorkflowActivations;
 	} = {};
 
+	constructor() {
+		this.activeWorkflows = new ActiveWorkflows();
+	}
+
 	// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
 	async init() {
 		// Get the active workflows from database
@@ -100,8 +104,6 @@ export class ActiveWorkflowRunner {
 			await Db.collections.Webhook.clear();
 		}
 
-		this.activeWorkflows = new ActiveWorkflows();
-
 		if (workflowsData.length !== 0) {
 			console.info(' ================================');
 			console.info('   Start Active Workflows:');
@@ -147,11 +149,6 @@ export class ActiveWorkflowRunner {
 		await externalHooks.run('activeWorkflows.initialized', []);
 	}
 
-	// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
-	async initWebhooks() {
-		this.activeWorkflows = new ActiveWorkflows();
-	}
-
 	/**
 	 * Removes all the currently active workflows
 	 *