fallbackLng does not support object type at i18next-http-middleware version 3.8.1 any more

[ai-supper]

🐛 Bug Report

fallbackLng does not support object type at i18next-http-middleware version 3.8.1 any more

To Reproduce

1. We always set the fallbackLng with object as below(i18next-http-middleware version 3.8.0 ), it works.

      fallbackLng: {
        default: ['en'],
      },

2. But after we upgrade i18next-http-middleware version 3.8.1, it has errors as below:

TypeError: _this.fallbacks.map is not a function
at /i18next-http-middleware@3.8.1/node_modules/i18next-http-middleware/esm/LanguageDetector.js:93:70
at Array.forEach ()
at LanguageDetector.detect (i18next-http-middleware@3.8.1/node_modules/i18next-http-middleware/esm/LanguageDetector.js:77:22)
at i18nextMiddleware (i18next-http-middleware@3.8.1/node_modules/i18next-http-middleware/esm/index.js:79:47)
at Layer.handle [as handle_request] (/express@4.21.2/node_modules/express/lib/router/layer.js:95:5)

if we change below , it works

      fallbackLng: ['en'],

Expected behavior

fallbackLng support the object type

[adrai]

please try with v3.8.2