test: switching off the cookie preferences in dev

This is so we can test if setting env variable in dev.yaml directly works as expected. At the moment we're having issues with the var interpolation. We will then set it back to true, test and finally do the prod feature flag setting.

Author: marianayovcheva

infrastructure/app/stages/dev.yaml

@@ -20,4 +20,4 @@ envVars:
   RAILS_ENV: production
   USE_TEST_SUPPLIERS: ${{ vars.USE_TEST_SUPPLIERS }}
   FF_SMALL_SUPPLIER_STARS: ${{ vars.FF_SMALL_SUPPLIER_STARS }}
-  FF_NEW_COOKIE_MANAGEMENT: ${{ vars.FF_NEW_COOKIE_MANAGEMENT }}
+  FF_NEW_COOKIE_MANAGEMENT: "False"