Memoize feature flag check

ee/lib/gitlab/code_owners/file.rb

@@ -3,6 +3,8 @@
 module Gitlab
   module CodeOwners
     class File
+      include ::Gitlab::Utils::StrongMemoize
+
       SECTION_HEADER_REGEX = /\[(.*?)\]/.freeze
 
       def initialize(blob, project = nil)
@@ -155,8 +157,10 @@ module Gitlab
       end
 
       def sectional_codeowners?
+        strong_memoize(:sectional_codeowners_check) do
           Feature.enabled?(:sectional_codeowners, @project, default_enabled: false)
         end
       end
     end
+  end
 end