Clarify sync client explanation of versions

[TeeEarls]

Clarified requirements for sync client version before applying SOA settings.

[prmerger-automator]

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

[learn-build-service-prod]

Learn Build status updates of commit 92a6e2c:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/identity/hybrid/how-to-group-source-of-authority-configure.md	✅Succeeded

For more details, please refer to the build report.

[v-dirichards]

@Justinha

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

This PR clarifies the requirements for sync client versions when configuring Group Source of Authority (SOA). The change emphasizes that sync clients must be upgraded to supported versions before applying SOA settings to ensure proper handling.

• Added clarification that sync client versions should be verified before applying SOA settings

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