fix(runtime): determine virtual routes by config file

[fi3ework]

Summary

Previously, virtual-routes and virtual-routes-ssr will be bundled in either SSR and non SSR, which will make the routes be eager imported by SSR, although routes are dynamic imported in non SSR.

var __webpack_modules__ = {
    "virtual-routes": function(module) {
        module.exports = require("virtual-routes");
    },
    "virtual-routes-ssr": function(module) {
        module.exports = require("virtual-routes-ssr");
    }
};

In this PR, determine the correct module ID as we already know it when initiating the config, which could also remove require from ESM code.

Related Issue

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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