bugfix: fix broken cpp integration caused by #553 (#570)

Hi, when I try to rebase my current work, just found cpp integration
(benchmark and test) failed to build, this is introduced by the feature
#553.
Tests have been passed.

Co-authored-by: tsu-bin <tsubin@gmail.com>

src/flashinfer_ops.cuh

@@ -423,6 +423,7 @@ cudaError_t BatchPrefillWithPagedKVCacheWrapper(
                 ParamsT params(q, paged_kv, /*custom_mask=*/nullptr, qo_indptr,
                                /*qk_indptr=*/nullptr, q_offset, o, lse,
                                /*alibi_slopes=*/nullptr, num_qo_heads,
+                               /*q_stride_n*/num_qo_heads*HEAD_DIM, /*q_stride_h*/HEAD_DIM,
                                /*window_left=*/-1, /*logits_soft_cap=*/0.f, sm_scale, rope_scale,
                                rope_theta);
                 params.request_indices = handler->GetRequestIndices<IdType>();
@@ -525,6 +526,7 @@ cudaError_t BatchDecodeWithPagedKVCacheWrapper(
                                            /*use_custom_mask=*/false, /*use_sliding_window=*/true,
                                            /*use_logits_soft_cap=*/false, /*use_alibi=*/false)>;
         ParamsT params(q, q_offset, paged_kv, o, lse, /*alibi_slopes=*/nullptr, num_qo_heads,
+                       /*q_stride_n*/num_qo_heads*HEAD_DIM, /*q_stride_h*/HEAD_DIM,
                        /*window_left=*/-1, /*logits_soft_cap=*/0.f, sm_scale, rope_scale,
                        rope_theta);
         params.request_indices = handler->GetRequestIndices<IdType>();