Update global.json

[ViktorHofer]

Use the new paths feature and allow newer SDKs when building

https://learn.microsoft.com/en-us/dotnet/core/tools/global-json#paths

[Copilot]

Pull Request Overview

This PR enhances the global.json for SDK lookup flexibility by introducing the new paths feature, allowing SDK roll-forward on major versions, and providing a custom error message when the required SDK is missing.

• Added "paths" array to include local .dotnet folder and $host$ placeholder.
• Kept "rollForward": "major" to permit newer SDKs.
• Included "errorMessage" to guide developers to the install script.

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[huoyaoyuan]

Can we remove the dotnet.cmd/sh helper when 10.0 releases and the feature is GA?

[ViktorHofer]

Yes, when VS supports it fully :)

[agocke]

Note: won’t help for runtime execution. It’s an sdk only feature. We might want to keep the scripts around if someone needs to run a tool on the latest

[agocke]

(Also ‘dnvm restore’ will just install the sdk locally so you don’t have to worry about this).

[ViktorHofer]

Right but I would still want to replace these scripts eventually with the eng/common/dotnet.cmd/sh scripts that we now have.

[akoeplinger]

The WasmBuildTests failures are related