Change tiIndicator deprecation date to June 2026

[poliveria]

Updated the deprecation date for the tiIndicator resource type.

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• [] Link to API.md file: ADD LINK HERE
• [] Link to PR for public-facing schema changes (schema-Prod-beta/v1.0.csdl): ADD LINK HERE
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Updated deprecation date from April 2026 to June 2026 per PM request.

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[learn-build-service-prod]

Learn Build status updates of commit 42b909a:

✅ Validation status: passed

File	Status	Preview URL	Details
api-reference/beta/resources/tiindicator.md	✅Succeeded

For more details, please refer to the build report.

[FaithOmbongi]

Hi @poliveria - Based on our discussion last week, I updated the docs to ensure tiIndicator is properly marked as deprecated as per the Graph docs deprecation guidelines https://learn.microsoft.com/en-us/graph/api/resources/tiindicator?view=graph-rest-beta&viewFallbackFrom=graph-rest-1.0

The only pending work now is so for Eng to update their schema so we can update the retirement date in the docs. And any other action items we discussed offline. Since those changes will be made in the private repo, I'll proceed to close this PR.