onnxruntime

d07ea64a - [webgpu] Fix MatMulNBits prefill shader synchronization (#23663)

[webgpu] Fix MatMulNBits prefill shader synchronization (#23663) ### Description This commit adds a `workgroupBarrier` to the MatMulNBits prefill shader to ensure proper synchronization between workgroup invocations, resolving a potential race condition. ### Motivation and Context See above.