ggml-webgpu: Windows D3D12 fallback for ShaderF16-lacking primary ada…#21744

MansfieldPlumbing wants to merge 1 commit intoggml-org:masterggml-org/llama.cpp:masterfrom

MansfieldPlumbing:fix/webgpu-windows-shaderf16-fallbackMansfieldPlumbing/llama.cpp:fix/webgpu-windows-shaderf16-fallbackCopy head branch name to clipboard