[webgpu] Enable DP4A MatMul generation path for Qualcomm (#24408)

With this PR, the generation speed for phi4 improves 2x on Qualcomm
Adreno X1 GPU (11.1 tps -> 23.2 tps for simple inputs).

Author: qjia7

onnxruntime/contrib_ops/webgpu/quantization/matmul_nbits.cc

@@ -684,7 +684,9 @@ Status MatMulNBits::ComputeInternal(onnxruntime::webgpu::ComputeContext& context
   }
 
   // On FP32 only GPUs, integer math is faster than FP32 therefore always use DP4A independent of length of M.
-  if ((M >= kMinMForTileOptimization || y->DataType() == DataTypeImpl::GetType<float>()) && CanApplyDP4AMatrixMatMulNBits(context, accuracy_level_, block_size, batch_count, N, K, components_a, has_zero_points)) {
+  if ((M >= kMinMForTileOptimization || y->DataType() == DataTypeImpl::GetType<float>() ||
+       context.AdapterInfo().vendor == std::string_view{"qualcomm"}) &&
+      CanApplyDP4AMatrixMatMulNBits(context, accuracy_level_, block_size, batch_count, N, K, components_a, has_zero_points)) {
     return ApplyDP4AMatrixMatMulNBits(a, b, scales, M, N, K, block_size, kMinMForTileOptimization, context, y);
   }