[v0.18.0][Triton][Qwen3.5] delete expr for kernels args (#7646)

### What this PR does / why we need it?
Some parameters of Triton operators are unnecessarily modified with the
"constexpr" modifier. When these parameters change, recompilation is
triggered, which significantly affects the model performance. Therefore,
these parameters need to be rectified.
backport: https://github.com/vllm-project/vllm-ascend/pull/7482


Signed-off-by: w30012745 <wangxiaoshuai2@h-partners.com>
Co-authored-by: w30012745 <wangxiaoshuai2@h-partners.com>

vllm_ascend/ops/triton/fla/chunk_o.py

@@ -22,7 +22,7 @@ from .utils import prepare_chunk_offsets, safe_exp
         "IS_VARLEN": lambda args: args["cu_seqlens"] is not None,
     }
 )
-@triton.jit(do_not_specialize=["T"])
+@triton.jit(do_not_specialize=["chunk_offsets", "scale", "T", "H", "Hg", "K", "V"])
 def chunk_fwd_kernel_o(
     q,
     k,
@@ -34,10 +34,10 @@ def chunk_fwd_kernel_o(
     chunk_offsets,
     scale,
     T,
-    H: tl.constexpr,
-    Hg: tl.constexpr,
-    K: tl.constexpr,
-    V: tl.constexpr,
+    H,
+    Hg,
+    K,
+    V,
     BT: tl.constexpr,
     BK: tl.constexpr,
     BV: tl.constexpr,