Repalce Ado token with system (#19766)

* Repalce Ado token with system

* Revert "Repalce Ado token with system"

This reverts commit ca26fba.

Author: DmitriiBobreshev

ci/ci-test-tasks/canary-tests-v2.yml

@@ -43,6 +43,6 @@ jobs:
 
   - script: |
       echo "Tasks to test: $(tasks)"
-      node ./ci/ci-test-tasks/test-and-verify-v2 $(ADOToken) $(ADOUrl) $(System.TeamProject) $(tasks)
+      node ./ci/ci-test-tasks/test-and-verify-v2 $(System.AccessToken) $(ADOUrl) $(System.TeamProject) $(tasks)
     displayName: 'Run test pipelines and verify results'
     failOnStderr: true