Solve Custom home page route error bug (#9180)

When you select Custom Route as home you get a 404 error "/custom not found" error.
This because 'homePageRoute' property was used instead of 'homePageCustom'

src/controllers/home.js

@@ -7,7 +7,7 @@ const meta = require('../meta');
 const user = require('../user');
 
 function adminHomePageRoute() {
-	return (meta.config.homePageRoute || meta.config.homePageCustom || '').replace(/^\/+/, '') || 'categories';
+	return ((meta.config.homePageRoute === 'custom' ? meta.config.homePageCustom : meta.config.homePageRoute) || 'categories').replace(/^\//, '');
 }
 
 async function getUserHomeRoute(uid) {