fix(core): Fix issues with community node installation (no-changelog) (#5481)

This fixes the following issues:
* After a community node is installed, we were not calling `postProcessLoaders`, which was causing a bunch of unexpected behaviors, and sometimes even crashes. This was only happening in the session where the package was installed. After a crash, the restarted service was working without these issues.
* After a community node is installed, the icon for the nodes and credentials were missing in the UI, as we were creating one icons route per installed package at startup, and this did not handle newly installed packages. restarting the service fixes this issue as well.

Fixes https://community.n8n.io/t/showing-weird-count-on-community-nodes/23035

packages/cli/src/CommunityNodes/packageModel.ts

@@ -1,5 +1,5 @@
-import type { INodeTypeData, INodeTypeNameVersion } from 'n8n-workflow';
 import { LoggerProxy } from 'n8n-workflow';
+import type { PackageDirectoryLoader } from 'n8n-core';
 import * as Db from '@/Db';
 import { InstalledNodes } from '@db/entities/InstalledNodes';
 import { InstalledPackages } from '@db/entities/InstalledPackages';
@@ -12,8 +12,9 @@ export async function findInstalledPackage(packageName: string): Promise<Install
 }
 
 export async function isPackageInstalled(packageName: string): Promise<boolean> {
-	const installedPackage = await findInstalledPackage(packageName);
-	return installedPackage !== null;
+	return Db.collections.InstalledPackages.exist({
+		where: { packageName },
+	});
 }
 
 export async function getAllInstalledPackages(): Promise<InstalledPackages[]> {
@@ -27,13 +28,11 @@ export async function removePackageFromDatabase(
 }
 
 export async function persistInstalledPackageData(
-	installedPackageName: string,
-	installedPackageVersion: string,
-	installedNodes: INodeTypeNameVersion[],
-	loadedNodeTypes: INodeTypeData,
-	authorName?: string,
-	authorEmail?: string,
+	packageLoader: PackageDirectoryLoader,
 ): Promise<InstalledPackages> {
+	const { packageJson, nodeTypes, loadedNodes } = packageLoader;
+	const { name: packageName, version: installedVersion, author } = packageJson;
+
 	let installedPackage: InstalledPackages;
 
 	try {
@@ -41,21 +40,21 @@ export async function persistInstalledPackageData(
 			const promises = [];
 
 			const installedPackagePayload = Object.assign(new InstalledPackages(), {
-				packageName: installedPackageName,
-				installedVersion: installedPackageVersion,
-				authorName,
-				authorEmail,
+				packageName,
+				installedVersion,
+				authorName: author?.name,
+				authorEmail: author?.email,
 			});
 			installedPackage = await transactionManager.save<InstalledPackages>(installedPackagePayload);
 			installedPackage.installedNodes = [];
 
 			promises.push(
-				...installedNodes.map(async (loadedNode) => {
+				...loadedNodes.map(async (loadedNode) => {
 					const installedNodePayload = Object.assign(new InstalledNodes(), {
-						name: loadedNodeTypes[loadedNode.name].type.description.displayName,
+						name: nodeTypes[loadedNode.name].type.description.displayName,
 						type: loadedNode.name,
 						latestVersion: loadedNode.version,
-						package: installedPackageName,
+						package: packageName,
 					});
 					installedPackage.installedNodes.push(installedNodePayload);
 					return transactionManager.save<InstalledNodes>(installedNodePayload);
@@ -70,7 +69,7 @@ export async function persistInstalledPackageData(
 		LoggerProxy.error('Failed to save installed packages and nodes', {
 			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
 			error,
-			packageName: installedPackageName,
+			packageName,
 		});
 		throw error;
 	}