Merge branch 'fl-fix-missing-required-prop' into 'master'

Adds missing prop in pipelines graph

Closes #11318

See merge request gitlab-org/gitlab-ee!11591

app/assets/javascripts/pipelines/pipeline_details_bundle.js

@@ -34,6 +34,7 @@ export default () => {
         props: {
           isLoading: this.mediator.state.isLoading,
           pipeline: this.mediator.store.state.pipeline,
+          mediator: this.mediator,
         },
         on: {
           refreshPipelineGraph: this.requestRefreshPipelineGraph,