Stages.yml is updated to enable node tests job

[iamAbhi-916]

Description

Updated stages.yml to enable node tests job , uncommented the node tests in stages.yaml so that release as well as continuous pipelines can pickup and test node .

Type of Change

• Bug fix (non-breaking change which fixes an issue)

Why

To add node tests in pipeline

Resolves [Add Relevant Issue Here]
#14516

What

Uncommented the node tests in stages.yaml so that release as well as continuous pipelines can pickup and test node .

Screenshots

Add any relevant screen captures here from before or after your changes.

Testing

If you added tests that prove your changes are effective or that your feature works, add a few sentences here detailing the added test scenarios.

Changelog

no

[TatianaKapos]

@iamAbhi-916 RNW setup is a little different than other repos, we want to keep our branches clean to not clutter up the stable branches. PRs should come from your own forked repository of the react-native-windows repo, see https://github.com/microsoft/react-native-windows/blob/main/docs/contributing.md for more information! I think @Yajur-Grover also recorded some videos on how to do so!