Document permitted actions in Enabled Degraded State

[RaghvendraMandawale]

Added guidelines for permitted and non-permitted actions when the fabric is in an Enabled Degraded State, including specific operations and recommended practices.

[learn-build-service-prod]

Learn Build status updates of commit 556151b:

💡 Validation status: suggestions

File	Status	Preview URL	Details
operator-nexus/howto-replace-network-devices.md	💡Suggestion		Details

operator-nexus/howto-replace-network-devices.md

• Line 5, Column 12: [Suggestion: ms-author-invalid - See documentation] Invalid value for 'ms.author', 'sushrao' is not a valid Microsoft alias.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[RaghvendraMandawale]

@microsoft-github-policy-service agree company="Microsoft"

[prmerger-automator]

@RaghvendraMandawale : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. @sushantjrao

[ttorble]

@RaghvendraMandawale per my comment in azure-docs PR 127638, you'll need to create this change in the private repo azure-stack-docs-pr. You can change the author value there.

Microsoft authors and contributors need to make content contributions through the private repository so the content can be staged and validated by the current validation rules.

After you make your changes in the private repo, review the articles on staging, and fix any validation issues, you can add the sign-off comment to let PR reviewers know that the updates are ready to be merged. 

Read about authors working in the public repo for more information.

 If you need help getting set up to work in the private repo, see Get started contributing to the Microsoft Learn platform.

 We'll close this PR. Thank you.