Enable new header feature flag in production (#2154)

Co-authored-by: Olga Bulat <[email protected]>

Author: zackkrida

feat/feature-flags.json

@@ -11,10 +11,9 @@
     "new_header": {
       "status": {
         "staging": "enabled",
-        "production": "disabled"
+        "production": "enabled"
       },
-      "description": "Toggle the new header, including recent searches.",
-      "defaultState": "off"
+      "description": "Toggle the new header, including recent searches."
     },
     "feat_disabled": {
       "status": "disabled",