fix: when redirecting to the MFE, preserve query flags

This can potentially fix analytics based on query params like
utm_campaign and the like. And generally seems like the correct
thing to do.

AA-1128

openedx/features/learner_profile/views/learner_profile.py

@@ -45,6 +45,8 @@ def learner_profile(request, username):
     """
     if should_redirect_to_profile_microfrontend():
         profile_microfrontend_url = f"{settings.PROFILE_MICROFRONTEND_URL}{username}"
+        if request.GET:
+            profile_microfrontend_url += f'?{request.GET.urlencode()}'
         return redirect(profile_microfrontend_url)
 
     try: