Add automatic device isolation feature details

[noam04]

Added feature for automatic device isolation in Microsoft Defender for Endpoint.

[prmerger-automator]

@noam04 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. @lwainstein@noamhadash

[prmerger-automator]

@noam04 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. @lwainstein@noamhadash

[learn-build-service-prod]

Learn Build status updates of commit 5f7e479:

✅ Validation status: passed

File	Status	Preview URL	Details
defender-endpoint/whats-new-in-microsoft-defender-endpoint.md	✅Succeeded

For more details, please refer to the build report.

[v-regandowner]

@limwainstein

Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[Copilot]

Pull request overview

Adds a “What’s new” entry announcing Automatic device isolation (automatic attack disruption) as generally available (GA) in Microsoft Defender for Endpoint, linking to the relevant response action details and the automatic attack disruption overview.

Changes:

• Adds a new July entry for Automatic device isolation (automatic attack disruption) marked as GA
• Links the feature entry to the isolation action section and the automatic attack disruption documentation