feat: Enable CookieNameChange in Studio in prep for session cookie rename (#28602)

ref: ARCHBOM-1887

cms/envs/common.py

@@ -717,6 +717,10 @@ MIDDLEWARE = [
     # Cookie monitoring
     'openedx.core.lib.request_utils.CookieMonitoringMiddleware',
 
+    # After cookie monitoring, but before anything else that looks at
+    # cookies, especially the session middleware
+    'openedx.core.djangoapps.cookie_metadata.middleware.CookieNameChange',
+
     'openedx.core.djangoapps.header_control.middleware.HeaderControlMiddleware',
     'django.middleware.cache.UpdateCacheMiddleware',
     'django.middleware.common.CommonMiddleware',