refactor: migrated FEATURES dict settings to top-level in core files and fixed related test files. (#37389)

* refactor: moved remaining feature dicts settings into top-level settings.

* refactor: moved remaining feature dicts settings into top-level settings.

* fix: fixed the test files

* fix: fixed tehe pylint errors

* fix: fixation of the cms ci failure

* fix: fixed remaining feature settings for cms

* fix: added fix for requirements

* fix: added fix for lms tests

* fix: resolved the test views issue

* fix: configured views file and test_views

* fix: fixed lint errors and assertion issues

* fix: added fix for base url issue in test view

* fix: added fix for base_url and assertion issue

* fix: added configurations for base utl fix

* fix: handled none issue for mfe config

* fix: corrected override settings in test views

* fix: added getattr defensive technique for view settings

* fix: reverted views and test_views file

* fix: added settings in views file

* fix: added with patch within functions in test view

* fix: rearranged the features in default_legacy_config

* fix: fixing the tests  with clearing cache

* fix: reverted test views to verify the CI check

* fix: added cache clear in mfe config test

* fix: fixed the patch toggles to override settings

* fix: fixed the lint errors

* fix: changed patch toggle to override settings

cms/djangoapps/contentstore/tests/test_utils.py

@@ -892,8 +892,8 @@ class UpdateCourseDetailsTests(ModuleStoreTestCase):
 
     @patch.dict("django.conf.settings.FEATURES", {
         "ENABLE_PREREQUISITE_COURSES": False,
-        "ENTRANCE_EXAMS": False,
     })
+    @override_settings(ENTRANCE_EXAMS=False)
     @patch("cms.djangoapps.contentstore.utils.CourseDetails.update_from_json")
     def test_update_course_details_self_paced(self, mock_update):
         """
@@ -918,8 +918,8 @@ class UpdateCourseDetailsTests(ModuleStoreTestCase):
 
     @patch.dict("django.conf.settings.FEATURES", {
         "ENABLE_PREREQUISITE_COURSES": False,
-        "ENTRANCE_EXAMS": False,
     })
+    @override_settings(ENTRANCE_EXAMS=False)
     @patch("cms.djangoapps.contentstore.utils.CourseDetails.update_from_json")
     def test_update_course_details_instructor_paced(self, mock_update):
         """