NodeGraph: Show node graph collapsed by default with trace view (#34491) (#34742)

* Show node graph collapsed by default with trace view

* Fix rename variable

* Change the message

* Add test

* Fix e2e test

* Remove expect in exemplars test

* Align icon

* review fixes

(cherry picked from commit 9dafd4f863)

Co-authored-by: Andrej Ocenas <mr.ocenas@gmail.com>

e2e/suite1/specs/exemplars.spec.ts

@@ -65,8 +65,6 @@ describe('Exemplars', () => {
 
     e2e.components.DataSource.Prometheus.exemplarMarker().first().trigger('mouseover');
     e2e().contains('Query with gdev-tempo').click();
-
-    e2e().get('[aria-label="Node: app"]').should('be.visible');
     e2e.components.TraceViewer.spanBar().should('have.length', 11);
   });
 });

e2e/suite1/specs/trace-view-scrolling.spec.ts

@@ -29,7 +29,7 @@ describe('Trace view', () => {
 
     e2e.pages.Explore.General.scrollBar().scrollTo('center');
 
-    // After scrolling we should have 139 spans instead of the first 100
-    e2e.components.TraceViewer.spanBar().should('have.length', 139);
+    // After scrolling we should load more spans
+    e2e.components.TraceViewer.spanBar().should('have.length', 140);
   });
 });