chore: make sure links point to MFE not legacy

now that the legacy profile and account pages have been removed, we need to make sure that all of the links point to the MFE URLs; we were relying on the legacy applications to do redirection before.

FIXES: APER-3884
FIXES: openedx/public-engineering#71

src/supportHeader/Header.jsx

@@ -14,6 +14,8 @@ import MobileHeader from './MobileHeader';
 import ROUTES from '../data/constants/routes';
 
 ensureConfig([
+  'ACCOUNT_PROFILE_URL',
+  'ACCOUNT_SETTINGS_URL',
   'LMS_BASE_URL',
   'LOGOUT_URL',
   'LOGIN_URL',
@@ -143,12 +145,12 @@ export default function Header() {
     dashboardMenuItem,
     {
       type: 'item',
-      href: `${config.LMS_BASE_URL}/u/${authenticatedUser.username}`,
+      href: `${config.ACCOUNT_PROFILE_URL}/u/${authenticatedUser.username}`,
       content: 'Profile',
     },
     {
       type: 'item',
-      href: `${config.LMS_BASE_URL}/account/settings`,
+      href: config.ACCOUNT_SETTINGS_URL,
       content: 'Account',
     },
     logoutMenuItem,