Merge branch 'add_state_to_merge_request_diff_entity' into 'master'

Add state of merge request diff to the entity

See merge request gitlab-org/gitlab!64195

app/serializers/merge_request_diff_entity.rb

@@ -16,6 +16,7 @@ class MergeRequestDiffEntity < Grape::Entity
   end
 
   expose :created_at
+  expose :state
   expose :commits_count
 
   expose :latest?, as: :latest

spec/serializers/merge_request_diff_entity_spec.rb

@@ -29,7 +29,7 @@ RSpec.describe MergeRequestDiffEntity do
       expect(subject).to include(
         :version_index, :created_at, :commits_count,
         :latest, :short_commit_sha, :version_path,
-        :compare_path
+        :compare_path, :state
       )
     end
   end