chore: update vitejs config to deploy on the same default port as the @vue/cli-service

This port is 8080. This is done to not break existing tooling and devops code.

vite.config.mjs

@@ -4,6 +4,9 @@ import * as path from "path";
 
 // https://vitejs.dev/config/
 export default defineConfig({
+  server: {
+    port: 8080
+  },
   plugins: [ vue() ],
   resolve: {
     alias: {