xcsync sync -tfm net9.0-ios issues after adding Widget Extension to generated project

Hello,

Generating and syncing an Xcode project for our .NET9 MAUI application is functioning without any issues for a basic application. However, as soon as I add the Widget Extension to that project, I encounter the following error:

```
[13:37:35 INF xcsync (1)] Syncing files from project 'obj/Debug/net9.0-ios/iossimulator-x64/xcsync' to target 'MyApp.UI.csproj'
Unhandled exception: System.Text.Json.JsonException: Unknown isa value: PBXCopyFilesBuildPhase
at xcsync.Projects.Xcode.XcodeObjectConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options) in /_/src/xcsync/Projects/Xcode/XcodeObjectConverter.cs:line 18
at xcsync.Projects.Xcode.XcodeProjectObjectsJsonConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options) in /_/src/xcsync/Projects/Xcode/XcodeProjectObjectsJsonConverter.cs:line 30
at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.ContinueDeserialize(ReadBufferState& bufferState, JsonReaderState& jsonReaderState, ReadStack& readStack)
at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsync(Stream utf8Json, CancellationToken cancellationToken)
at xcsync.Projects.XcodeWorkspace.LoadProjectAsync(String path, CancellationToken cancellationToken) in /_/src/xcsync/Projects/XcodeWorkspace.cs:line 261
at xcsync.Projects.XcodeWorkspace.LoadAsync(CancellationToken cancellationToken) in /_/src/xcsync/Projects/XcodeWorkspace.cs:line 63
at xcsync.SyncContext.SyncFromXcodeAsync(CancellationToken token) in /_/src/xcsync/SyncContext.cs:line 484
at xcsync.SyncContext.SyncAsync(CancellationToken token) in /_/src/xcsync/SyncContext.cs:line 33
at xcsync.Commands.SyncCommand.Execute() in /_/src/xcsync/Commands/SyncCommand.cs:line 22
at System.CommandLine.Invocation.AnonymousCommandHandler.InvokeAsync(InvocationContext context)
at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass17_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass12_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass22_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass19_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<b__18_0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass16_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<b__5_0>d.MoveNext()
--- End of stack trace from previous location ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass8_0.<b__0>d.MoveNext()
```

Is this a known bug, or is it related to the fact that the Widget Extension is based on SwiftUI rather than Objective-C? Currently, I have a working .NET MAUI application with Live Activity support by creating a (separate) native Xcode project with the same BundleIdentifiers as the MAUI iOS app.