refactor: learner home cleanup (#31240)

* refactor: remove dev logging

* style: run black

* refactor: move masquerade check into utils

* style: remove unnecessary assignment

* style: update dependency orderings

* refactor: add function tracing for perf testing

* refactor: move grade data fetching out of serializer

This allows us to separately profile the collection of grade data

* fix: add missing requires_context metadata

* refactor: split out serialization for profiling

common/djangoapps/student/views/dashboard.py

@@ -519,8 +519,7 @@ def student_dashboard(request):  # lint-amnesty, pylint: disable=too-many-statem
     if not UserProfile.objects.filter(user=user).exists():
         return redirect(reverse('account_settings'))
 
-    enable_learner_home_mfe = should_redirect_to_learner_home_mfe()
-    if enable_learner_home_mfe:
+    if should_redirect_to_learner_home_mfe():
         return redirect(settings.LEARNER_HOME_MICROFRONTEND_URL)
 
     platform_name = configuration_helpers.get_value("platform_name", settings.PLATFORM_NAME)