What’s new (.NET 10): rollup updates and cross-links

[davidortinau]

This PR updates the .NET 10 “What’s new” article with the rollup of features we documented across focused PRs, with cross-links to the underlying topics. It follows the conceptual policy to avoid minor API-surface churn and focuses on meaningful usage guidance.

Scope

• Page: docs/whats-new/dotnet-10.md
• ms.date refreshed to 2025-08-21
• Added/updated sections:
  • Shell: NavBarVisibilityAnimationEnabled toggle
  • SearchHandler: ShowSoftInputAsync/HideSoftInputAsync; trimming caveat pointer for DisplayMemberName
  • WebView (Android): JavaScript enable/disable note (links to article)
  • HybridWebView: init customization section link (RunAfterInitialize on Windows; handler access on Android/iOS/macOS)
  • Pickers: nullable DatePicker/TimePicker selection; retained Open/Close programmatic control
  • Page.IsBusy: corrected guidance to prefer ActivityIndicator for page/view busy UX
• Removed minor API-surface-only notes per our policy (e.g., internal→public exposure items)

Cross-links to topic PRs (for reviewer context)

• Pop-ups: [NET10] Pop Ups async #2983
• MediaPicker: [NET10] MediaPicker multiselect #2984
• Gestures: [NET10] Deprecate ClickGestureRecognizer #2985
• Messaging: [NET10] Messaging: Migrate from MessagingCenter to modern alternatives (Toolkit WeakReferenceMessenger) #2986
• iOS Safe Area: [NET10] iOS SafeAreaEdges #2987
• ToolbarItem: [NET10] ToolbarItem secondary behavior on iOS/macOS #2988, [NET10] ToolbarItem #2993
• Entry/Editor: [NET10] Entry/Editor selection change tracking on Android #2989
• WebView/Hybrid/Blazor interception: [NET10] Webviews interception  #2991
• Window: [NET10] Enabling/disabling minimize/maximize buttons on Window #2992
• TableView: [NET10] Add migration section to TableView #2994
• Shell trimming + SearchHandler note: [NET10] Shell SearchHandler trimming guidance #2996
• XAML SG + global xmlns: [NET10] XAML preview features  #2997
• Pickers (nullable + open/close): [NET10] Pickers #2998
• WebView Android JS toggle: [NET10] WebView Js toggle #2999
• Page.IsBusy guidance: [NET10] Page.IsBusy #3000
• Shell NavBar animation: [NET10] Shell navbar visibility animation #3001
• SearchHandler soft input: Shell SearchHandler: document .NET 10 soft input keyboard methods #3002
• HybridWebView init customization: HybridWebView (.NET 10): initialization customization and platform view access #3003

Acceptance checks

• Balanced links; no fragile anchors introduced (WebView JS toggle links to article root)
• Monikers: not used on this page; outbound links use ?view=net-maui-10.0
• Lint: headings and lists follow established patterns

Once merged, I’ll add this PR link back to the tracker (ISSUE-TRACKER.NET10-MAUI-Docs.md) under “What’s new”. Thanks!

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Internal previews

📄 File	🔗 Preview link
docs/whats-new/dotnet-10.md	docs/whats-new/dotnet-10

[Copilot]

Pull Request Overview

This PR consolidates .NET MAUI .NET 10 feature documentation into a comprehensive "What's new" article, providing cross-references to detailed topic coverage while following the established policy of avoiding minor API surface change callouts.

• Adds rollup sections for Shell navigation bar animation, SearchHandler soft input controls, WebView JavaScript configuration, HybridWebView initialization customization, and nullable picker selections
• Updates Page.IsBusy guidance to recommend ActivityIndicator instead of global busy states
• Removes minor API visibility change notes (StackNavigationManager, TabbedPageManager, ShadowTypeConverter) per documentation policy

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⚠️ Validation status: warnings

File	Status	Preview URL	Details
docs/whats-new/dotnet-10.md	⚠️Warning	View (>=net-maui-8.0)	Details

docs/whats-new/dotnet-10.md

• Line 81, Column 250: [Warning: bookmark-not-found - See documentation] Cannot find bookmark '#customize-initialization-and-access-platform-web-views' in 'user-interface/controls/hybridwebview.md'.

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Learn Build status updates of commit 0fcb087:

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[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

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Learn Build status updates of commit ea68ad1:

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[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

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Learn Build status updates of commit ba6eef7:

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