Changes on webpack.config.js does not trigger webpack rebuild

[vtrifonov]

When you change only the webpack.config.js e.g. adding a new item to the appComponents collection:

    const appComponents = [
        "tns-core-modules/ui/frame",
        "tns-core-modules/ui/frame/activity",
        resolve(__dirname, "app/MyNativeScriptActivity"),
    ];

the CLI wouldn't trigger a webpack rebuild and the changes wouldn't be applied.