Update note on Conditional Access applicability

[qaehtesh]

Clarify that Conditional Access does not apply to Windows sign-in processes. we already call this out in our sign-in logs docs but not in our core CA docs yet.

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[Copilot]

Pull Request Overview

This PR adds clarification to the Conditional Access documentation regarding its applicability to Windows sign-in processes. The update emphasizes that Conditional Access does not apply to Windows sign-in methods like Windows Hello for Business, but rather protects sign-in attempts to cloud resources.

• Adds a note clarifying Conditional Access scope limitations for Windows sign-in processes

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[v-dirichards]

@MicrosoftGuyJFlo

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"
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