fix: switching to en on root was broken

Author: ZibanPirate

web/src/apps/main/redux/reducers/settings/index.ts

@@ -42,12 +42,11 @@ export const settings = (
           action.payload.language.code === "en" ? "" : `/${action.payload.language.code}`;
 
         if (match?.params.lang || langPrefix) {
-          history.push({
-            ...history.location,
-            pathname: match?.params.lang
+          const pathname =
+            (match?.params.lang
               ? history.location.pathname.replace(`/${match.params.lang}`, langPrefix)
-              : `${langPrefix}${history.location.pathname}`,
-          });
+              : `${langPrefix}${history.location.pathname}`) || "/";
+          history.push({ ...history.location, pathname });
         }
       }
       return { ...state, ...action.payload };