Rendering non F# files in .fsproj crashes ionide

[pkese]

Describe the bug

I have a bit of scripting in my .fsproj file (to render some json-schemas from yaml written specs):

    <ItemGroup>
        <YamlFiles Include="assets/schema/**/*.yaml" />
        <JsonFiles Include="@(YamlFiles->'assets/schema/%(RelativeDir)%(Filename).json')" />
    </ItemGroup>
    <Target Name="GenerateJsonFromYaml" BeforeTargets="BeforeBuild" Inputs="@(YamlFiles)" Outputs="@(JsonFiles)">
        <Exec Command="dotnet fsi Yaml2Json.fsx @(YamlFiles, ' ')" />
    </Target>
    <ItemGroup>
        <None Include="assets/schema/**">
            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
        </None>
    </ItemGroup>

dotnet restore and dotnet build handle this code prefectly fine (with expected results), but Ionide fails to load the project:
in the project list it shows "myproject.fsproj (loading...)" and then never loads the project.

If I remove the top two sections (the first ItemGroup and Target) then Ionide loads fine.

To Reproduce

Add something like the above to your .fsproj.
You can use something like cp/copy or simply touch insteady of my Yaml2Json.fsi (what the action does, probably doesn't matter anyway).

Environment (please complete the following information):

• OS: Ubuntu 24.04
• Ionide version: 7.25.2
• VSCode version: 1.97.2
• dotnet SDK version: 9.0.103
• mono / .Net Framework version: N/A

[pkese]

This is the only meaningful log that I get from the VSCode's in developer tools console when trying to load a file from that project:

ERR Couldn't find /home/peter/work/oecd/observatory2/src/backend/ingest/O2Schema.Types.fs in LoadedProjects. Have the projects loaded yet or have you tried restoring your project/solution?: Error: Couldn't find /home/peter/work/oecd/observatory2/src/backend/ingest/O2Schema.Types.fs in LoadedProjects. Have the projects loaded yet or have you tried restoring your project/solution?

at handleResponse (/home/peter/.vscode/extensions/ionide.ionide-fsharp-7.25.2/webpack:/node_modules/vscode-jsonrpc/lib/common/connection.js:531:48)
at processMessageQueue (/home/peter/.vscode/extensions/ionide.ionide-fsharp-7.25.2/webpack:/node_modules/vscode-jsonrpc/lib/common/connection.js:327:17)
at Immediate. (/home/peter/.vscode/extensions/ionide.ionide-fsharp-7.25.2/webpack:/node_modules/vscode-jsonrpc/lib/common/connection.js:311:13)
at processImmediate (node:internal/timers:483:21)

[TheAngryByrd]

To help diagnose this, you'll want to enable binlogs with the FSharp.generateBinlog setting

It'll output into the .ionide/ folder. You can then use https://github.com/KirillOsenkov/MSBuildStructuredLog?tab=readme-ov-file#installing-the-avalonia-version-on-mac to investigate what it's failing on.