[TRITON][TEST]Add nightly test for triton split_qkv_rmsnorm_rope (#5267)

### What this PR does / why we need it?
Add nightly test for triton split_rmsnorm_rope

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: release/v0.13.0
- vLLM main:
ad32e3e19c

---------

Signed-off-by: Angazenn <supperccell@163.com>

vllm_ascend/ops/triton/linearnorm/split_qkv_rmsnorm_rope.py

@@ -209,8 +209,8 @@ def split_qkv_rmsnorm_rope_impl(
     kv_hidden_size: int,
     head_dim: int,
     eps: float,
-    q_bias: Optional[torch.Tensor],
-    k_bias: Optional[torch.Tensor],
+    q_bias: Optional[torch.Tensor] = None,
+    k_bias: Optional[torch.Tensor] = None,
 ) -> tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
     KV_BLOCK_SIZE = triton.next_power_of_2(head_dim)
     assert KV_BLOCK_SIZE == head_dim