[cherry-pick] Fix indices (#47190) #47226
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当前无法从Tensor中获取到SparseTensor的sparse_dim,无法准确推断出indices的shape,所以目前先以3D点云模型为主,输入的SparseTensor的维度是5D的,其中非零元素是一维向量,所以indices是[4, -1]。