[XPU] fix strided_copy data_size param (#74225)

Author: cqulilujia

paddle/phi/kernels/xpu/strided_copy_kernel.cc

@@ -70,7 +70,9 @@ void StridedCopyKernel(const Context& dev_ctx,
  r = xpu::copy<XPUType>(dev_ctx.x_context(), input_data, output_data, 1);
  PADDLE_ENFORCE_XDNN_SUCCESS(r, "copy");
  } else {
- int64_t data_size = input.Holder()->size() - input.meta().offset;
+ int64_t data_size_in = input.Holder()->size() - input.meta().offset;
+ int64_t data_size_out = out->Holder()->size() - out->meta().offset;
+ int64_t data_size = std::max(data_size_in, data_size_out);
  r = xpu::strided_copy<XPUType>(dev_ctx.x_context(),
  input_data,
  output_data,