[v9.9][maui] MAUI/iOS/Android project templates missing when only .NET11 is installed globally

Describe the issue

If I only have .NET 11 globally installed (with MAUI workloads) and I try to create a new project from VS Code, I won't see the MAUI/iOS/Android templates.

It seems C# DevKit is using a .NET 10 installation somewhere, which doesn't have MAUI workloads so it doesn't have anything to show.

Similar root cause as https://github.com/microsoft/vscode-dotnettools/issues/3440, it might need to recognize the global .NET 11 installation somehow

Note: seems CSI can also reproduce this with a .NET 10 global installation somehow

Collect logs

csdevkit-logs-2026-08-24T16-09-45.zip

Steps to reproduce

1. Ensure .NET 11 only is installed globally
2. Explorer: Create .NET project -> MAUI templates doesn't show up

Expected behavior

MAUI/Android/iOS template always exist in "Create a new .NET project" list

Environment information

• VSCode: 1.136.0-insider (Universal)
• .NET SDK: 11.0.100-preview.7.26381.103
• MAUI: 11.0.0-preview.7.26403.4

Extensions:

• NET MAUI: 1.17.228-g7a01fb0c71
• C# Dev Kit: 9.9.462-gf055a7
• C#: 2.151.17

Start by reproducing the issue from Explorer: Create .NET project with only the listed .NET 11 SDK and MAUI workloads installed, then inspect the attached csdevkit logs. Compare template discovery with the .NET 10-only case described in the report; done means MAUI, Android, and iOS templates appear in the project creation list under the reported environment.