Fix summary stats on iteration report

ee/app/assets/javascripts/burndown_chart/graphql/iteration_issues_summary.query.graphql

@@ -5,6 +5,7 @@ query IterationIssuesSummary(
   $weight: Boolean = false
 ) {
   group(fullPath: $fullPath) @include(if: $isGroup) {
+    id
     openIssues: issues(
       iterationId: [$id]
       state: opened
@@ -29,6 +30,7 @@ query IterationIssuesSummary(
     }
   }
   project(fullPath: $fullPath) @skip(if: $isGroup) {
+    id
     openIssues: issues(iterationId: [$id], state: opened, assigneeId: "none") {
       count @skip(if: $weight)
       weight @include(if: $weight)

ee/spec/features/groups/iterations/user_views_iteration_spec.rb

@@ -47,9 +47,9 @@ RSpec.describe 'User views iteration' do
         end
 
         aggregate_failures 'expect summary information' do
-          expect(page).to have_content("Completed")
-          expect(page).to have_content("Incomplete")
-          expect(page).to have_content("Unstarted")
+          expect(page).to have_content("Completed 25%")
+          expect(page).to have_content("Incomplete 25%")
+          expect(page).to have_content("Unstarted 50%")
         end
 
         aggregate_failures 'expect burnup and burndown charts' do