BackgroundAssets iOS xcode16.3 b3

#BackgroundAssets.framework https://github.com/dotnet/macios/pull/22450

diff -ruN /Applications/Xcode_16.3.0-beta2.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/BackgroundAssets.framework/Headers/BAError.h /Applications/Xcode_16.3.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/BackgroundAssets.framework/Headers/BAError.h
--- /Applications/Xcode_16.3.0-beta2.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/BackgroundAssets.framework/Headers/BAError.h	2025-02-26 06:28:47
+++ /Applications/Xcode_16.3.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/BackgroundAssets.framework/Headers/BAError.h	2025-03-12 06:19:49
@@ -35,6 +35,7 @@
 /// @constant BAErrorCodeDownloadEssentialDownloadNotPermitted The requested download could not be enqueued because the download is marked as essential, which is prohibited in this context.
 /// @constant BAErrorCodeDownloadBackgroundActivityProhibited The requested download could not be enqueued. Check the device‘s Low Power Mode or Background App Refresh settings.
 /// @constant BAErrorCodeDownloadWouldExceedAllowance The requested download cannot be enqueued. The download would exceed the download allowance.
+/// @constant BAErrorCodeDownloadDoesNotExist The operation for a download cannot be performed because that BADownload object does not exist.
 /// @constant BAErrorCodeSessionDownloadDisallowedByDomain The requested URL is not permitted to be downloaded until the application is launched.
 /// @constant BAErrorCodeSessionDownloadDisallowedByAllowance The requested download will not be allowed due to running out of download allowance.
 /// @constant BAErrorCodeSessionDownloadAllowanceExceeded The requested download failed because the download allowance has been exceeded.
@@ -54,6 +55,7 @@
     BAErrorCodeDownloadEssentialDownloadNotPermitted = 109,
     BAErrorCodeDownloadBackgroundActivityProhibited = 111,
     BAErrorCodeDownloadWouldExceedAllowance = 112,
+    BAErrorCodeDownloadDoesNotExist = 113,
 
     BAErrorCodeSessionDownloadDisallowedByDomain = 202,
     BAErrorCodeSessionDownloadDisallowedByAllowance = 203,