Update object-app.md

[warrenbryant-msft]

Updated App Object page to include information about the Application Insights Instrumentation Key.

[learn-build-service-prod]

Learn Build status updates of commit 2ee79bf:

✅ Validation status: passed

File	Status	Preview URL	Details
power-platform/power-fx/reference/object-app.md	✅Succeeded

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

[jorisdg]

What is the name of the actual property? I looked for it in TIP but couldn't find it.

[warrenbryant-msft]

What is the name of the actual property? I looked for it in TIP but couldn't find it.

"Instrumentation key"

The feature is not new, it was just identified that it wasn't referenced in the doc, so this is just a doc update.

[learn-build-service-prod]

Learn Build status updates of commit 92f4d7d:

✅ Validation status: passed

File	Status	Preview URL	Details
power-platform/power-fx/reference/object-app.md	✅Succeeded

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 35158e5:

✅ Validation status: passed

File	Status	Preview URL	Details
power-platform/power-fx/reference/object-app.md	✅Succeeded

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