[BackgroundAssets] Update bindings up to Xcode 27.0 Beta 3

[dalexsoto]

Summary

• Update BackgroundAssets bindings for APIs introduced in Xcode 27.0 Beta 3.
• Add language, manifest, localized asset, and batch availability APIs with generated async wrappers.
• Add deprecations for superseded APIs and remove the resolved xtro todo files for all four platforms.

Testing

• make world
• Clean xtro run: sanity passed with 0 unclassified APIs
• Clean Cecil run: 112 passed, 4 skipped
• Introspection: iOS 44/44, tvOS 43/43, macOS 32/32 with 2 expected availability ignores
• Mac Catalyst focused selector, field, and signature fixtures: 3/3 each (the full suite reproduces the pre-existing CLLocationButton TCC crash)
• Filtered AppSizeTest run: 16 expected skips under beta Xcode, 0 failures

[Copilot]

Pull request overview

Updates the BackgroundAssets framework bindings to match APIs introduced in Xcode 27.0 Beta 3, including new localization/manifest-related APIs and corresponding async wrappers, and cleans up xtro annotations now that the APIs are bound.

Changes:

• Added new BackgroundAssets APIs (language change request enum value, localized asset accessors, manifest APIs, and related completion handlers).
• Added deprecations for superseded BAAssetPackManager methods and updated Documentation known-failures for newly generated async wrappers.
• Removed resolved xtro .todo files for BackgroundAssets across iOS/tvOS/macOS/Mac Catalyst.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/xtro-sharpie/api-annotations-dotnet/tvOS-BackgroundAssets.todo	Removed resolved xtro todo entries for tvOS BackgroundAssets.
tests/xtro-sharpie/api-annotations-dotnet/macOS-BackgroundAssets.todo	Removed resolved xtro todo entries for macOS BackgroundAssets.
tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-BackgroundAssets.todo	Removed resolved xtro todo entries for Mac Catalyst BackgroundAssets.
tests/xtro-sharpie/api-annotations-dotnet/iOS-BackgroundAssets.todo	Removed resolved xtro todo entries for iOS BackgroundAssets.
tests/cecil-tests/Documentation.KnownFailures.txt	Added known-failure entries for new generated async wrapper APIs.
src/backgroundassets.cs	Added new BackgroundAssets bindings for Xcode 27.0 Beta 3 (language/localization + manifest APIs) and new deprecations.

[vs-mobiletools-engineering-service2]

✅ API diff for current PR / commit

NET (empty diffs)

• iOS: vsdrops gist ( No breaking changes )
• tvOS: vsdrops gist ( No breaking changes )
• MacCatalyst: vsdrops gist ( No breaking changes )
• macOS: vsdrops gist ( No breaking changes )

✅ API diff vs stable

NET (empty diffs)

• iOS: vsdrops gist ( No breaking changes )
• tvOS: vsdrops gist ( No breaking changes )
• MacCatalyst: vsdrops gist ( No breaking changes )
• macOS: vsdrops gist ( No breaking changes )

ℹ️ Generator diff

Generator Diff: vsdrops (html) vsdrops (raw diff) gist (raw diff) - Please review changes)

Pipeline on Agent
Hash: 1086dd6cec4a3e5e47346c4ab29622fced9ed99a [PR build]

[vs-mobiletools-engineering-service2]

🚀 [CI Build #1086dd6] Test results 🚀

Test results

✅ All tests passed on VSTS: test results.

🎉 All 191 tests passed 🎉

Tests counts

✅ assembly-processing: All 1 tests passed. Html Report (VSDrops) Download
✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 5 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 6 tests passed. Html Report (VSDrops) Download
✅ linker (iOS): All 15 tests passed. Html Report (VSDrops) Download
✅ linker (MacCatalyst): All 15 tests passed. Html Report (VSDrops) Download
✅ linker (macOS): All 21 tests passed. Html Report (VSDrops) Download
✅ linker (tvOS): All 15 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 18 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 17 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 18 tests passed. Html Report (VSDrops) Download
✅ monotouch (tvOS): All 18 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ sharpie: All 1 tests passed. Html Report (VSDrops) Download
✅ windows: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

macOS tests

✅ Tests on macOS Sonoma (14): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Sequoia (15): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Tahoe (26): All 5 tests passed. Html Report (VSDrops) Download
⚠️ Tests on macOS Golden Gate (27): Tests skipped, incorrect beta version. Html Report (VSDrops) Download

Linux Build Verification

✅ Linux build succeeded

Pipeline on Agent
Hash: 1086dd6cec4a3e5e47346c4ab29622fced9ed99a [PR build]