fix(ascend): remove stale 910B skip guard from PagedAttention test

The skip was based on an outdated diagnosis that ATB PagedAttention
crashes during Setup on 910B + CANN 8.5.x. After the framework rebase
onto master (which includes the pybind11 kw arg order fix), all 10
parametrizations pass on 910B4 with CANN 8.5.1. Keep the NPU-available
and implementation-registered checks since they are cheap, structural
prerequisites.

Author: zhangyue

tests/test_paged_attention.py

@@ -18,14 +18,6 @@ def _atb_pa_unsupported_reason():
     if not infini.ops.PagedAttention.active_implementation_indices("ascend"):
         return "ATB PagedAttention implementation not registered for Ascend"
 
-    # ATB PA crashes during `Setup` on Ascend 910B (CANN 8.5.x).  Other
-    # SoCs (Atlas A5 SoC 260) are known to work.  Extend the blacklist as
-    # more bad SoCs are identified.
-    name = torch.npu.get_device_name(0)
-
-    if "910B" in name:
-        return f"ATB PagedAttention crashes on {name} with CANN 8.5.x"
-
     return ""