Update New-AutoSensitivityLabelRule.md

[tiffanyyumsft]

update docs based on escalation for by design limitation of using edm sits

[tiffanyyumsft]

@chrisda for review and publication

[learn-build-service-prod]

Learn Build status updates of commit 79cd560:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/exchange/New-AutoSensitivityLabelRule.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 7c7d470:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/exchange/New-AutoSensitivityLabelRule.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel