Add UUP-related description to Dynamic Update setting

[masaaki-kanemoto]

As described at below document, this option which modify the setupconfig no longer enable Dynamic Update for UUP-based feature updates.
To avoid confusion and unrealistic expectations, the behavior related to UUP should be explained clearly.

https://techcommunity.microsoft.com/discussions/windows-servicing/faq-wsus-and-unified-update-platform-uup-on-premises/3773235

[prmerger-automator]

@masaaki-kanemoto : 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 11c717e:

✅ Validation status: passed

File	Status	Preview URL	Details
intune/configmgr/core/clients/deploy/about-client-settings.md	✅Succeeded

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[learn-build-service-prod]

Learn Build status updates of commit 7c46a8d:

❌ Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
	❌Error		Details

• [Error: CannotMergeCommit] Cannot merge commit 7c46a8ddde299add45c6ac3c5fc86ff5c3da4760 in branch main of repository https://github.com/masaaki-kanemoto/memdocs into branch main (commit 93dfab0c88fd34bda41300da119c69e13b2d2844). Please follow this documentation: https://help.github.com/articles/resolving-a-merge-conflict-using-the-command-line/ to use git.exe to resolve you content conflicts locally and then push to remote.

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.

[learn-build-service-prod]

Learn Build status updates of commit 04ac918:

✅ Validation status: passed

File	Status	Preview URL	Details
intune/configmgr/core/clients/deploy/about-client-settings.md	✅Succeeded

For more details, please refer to the build report.

[MandiOhlinger]

Tech review by @umair0204. Merging PR.