Reuse Issues mutation base

ee/app/graphql/mutations/issues/base.rb

-# frozen_string_literal: true
-
-module Mutations
-  module Issues
-    class Base < BaseMutation
-      include Mutations::ResolvesProject
-
-      argument :project_path, GraphQL::ID_TYPE,
-               required: true,
-               description: "The project the issue to mutate is in"
-
-      argument :iid, GraphQL::STRING_TYPE,
-               required: true,
-               description: "The iid of the issue to mutate"
-
-      field :issue,
-            Types::IssueType,
-            null: true,
-            description: "The issue after mutation"
-
-      authorize :update_issue
-
-      private
-
-      def find_object(project_path:, iid:)
-        project = resolve_project(full_path: project_path)
-        resolver = Resolvers::IssuesResolver
-          .single.new(object: project, context: context)
-
-        resolver.resolve(iid: iid)
-      end
-    end
-  end
-end

ee/app/graphql/mutations/issues/set_weight.rb

@@ -2,7 +2,7 @@
 
 module Mutations
   module Issues
-    class SetWeight < Base
+    class SetWeight < ::Mutations::Issues::Base
       graphql_name 'IssueSetWeight'
 
       argument :weight,