Map pin clustering docs for .NET MAUI 11

[davidortinau]

Summary

Documents the new Map pin clustering APIs in .NET MAUI 11 preview 2 (dotnet/maui#33831).

Changes

• docs/user-interface/controls/map.md — Added "Pin clustering" section after "Display a pin collection" covering:
  • Enabling clustering with IsClusteringEnabled
  • Assigning ClusteringIdentifier to group pins
  • Handling ClusterClicked event
  • Platform notes (iOS/Mac Catalyst native support, Android grid-based, Windows not yet supported)
• docs/whats-new/dotnet-11.md — Added Map pin clustering entry with sample badge, and maui CLI entry

Companion PR

• Sample: Add Map pin clustering sample for .NET MAUI 11 preview 3 maui-samples#743

---

Internal previews

📄 File	🔗 Preview link
docs/user-interface/controls/map.md	docs/user-interface/controls/map
docs/whats-new/dotnet-11.md	docs/whats-new/dotnet-11

[learn-build-service-prod]

PoliCheck Scan Report

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[learn-build-service-prod]

Learn Build status updates of commit b34cb70:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
docs/user-interface/controls/map.md	⚠️Warning	View (>=net-maui-8.0)	Details
docs/whats-new/dotnet-11.md	⚠️Warning	View (>=net-maui-8.0)	Details

docs/user-interface/controls/map.md

• Line 816, Column 74: [Warning: xref-not-found - See documentation] Cross reference not found: 'Microsoft.Maui.Controls.Maps.ClusterClickedEventArgs'.

docs/whats-new/dotnet-11.md

• Line 56, Column 27: [Warning: file-not-found - See documentation] Invalid file link: '~/get-started/maui-cli.md'.
• Line 46, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/samples/dotnet/maui-samples/userinterface-map-clustering' points to a learn site page that doesn't exist. Check the path or URL and update the link.

For more details, please refer to the build report.

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