Migrate `marginalia` to be `type: ops`

We don't intent do remove this feature flag
this is why it should be `type: ops`.

config/feature_flags/development/marginalia.yml → config/feature_flags/ops/marginalia.yml

@@ -3,5 +3,5 @@ name: marginalia
 introduced_by_url: 
 rollout_issue_url: 
 group: 
-type: development
+type: ops
 default_enabled: false

lib/gitlab/marginalia.rb

@@ -18,7 +18,7 @@ module Gitlab
       # During db:create and db:bootstrap skip feature query as DB is not available yet.
       return false unless Gitlab::Database.cached_table_exists?('features')
 
-      self.enabled = Feature.enabled?(:marginalia)
+      self.enabled = Feature.enabled?(:marginalia, type: :ops)
     end
   end
 end