fix: do not imclude mail manager code

Signed-off-by: Sebastian <krupinski01@gmail.com>

vite.config.ts

@@ -30,7 +30,6 @@ export default defineConfig({
     alias: {
       '@': path.resolve(__dirname, './src'),
       '@KTXC': path.resolve(__dirname, '../../core/src'),
-      '@MailManager': path.resolve(__dirname, '../mail_manager/src'),
     },
   },
   build: {
@@ -47,9 +46,15 @@ export default defineConfig({
         'vue',
         'vue-router',
         'pinia',
-        '@MailManager',
+        /^@MailManager\//,
       ],
       output: {
+        paths: (id) => {
+          if (id.startsWith('@MailManager/')) {
+            return '/modules/mail_manager/static/module.mjs'
+          }
+          return id
+        },
         assetFileNames: (assetInfo) => {
           if (assetInfo.name?.endsWith('.css')) {
             return 'mail-[hash].css'