Feat(agentflow) Node version detection and version upgrade support (#6347)

* Implement Node versioning

* Add new example for showing outdated versions

* Remove header sync button

* Test changes

* ix lint error

* Fix gemini comments

* Udpate example to show no verison, outdated and correct version

* Add Sync as a FAB button

* Increase test coversge

* Add 2 sceaniors to exampels to make it clearer

* Fix gemini comments

* Fix review comments

* Fix review comments