DashboardsE2E: Add E2E tests for Auto grid (#106171)

* add auto grid e2e tests

* remove unnecessary clean up in grouping tests

* refaactor repeated code

* Refactor some repeated blocks

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Co-authored-by: kay delaney <kay@grafana.com>

e2e/utils/flows/scenes/index.ts

@@ -8,3 +8,4 @@ export * from './saveDashboard';
 export * from './importDashboard';
 export * from './editPaneActions';
 export * from './selectPanel';
+export * from './panelPosition';