Add deterministic inference for eagle parity test (#30026)

test/registered/spec/eagle/test_spec_eagle_parity.py

@@ -13,12 +13,7 @@ from sglang.test.kits.spec_server_kits import SpecParityKit
 from sglang.test.server_fixtures.spec_eagle_fixture import Eagle3Base
 
 register_cuda_ci(est_time=360, stage="base-b", runner_config="1-gpu-large")
-register_xpu_ci(
-    est_time=360,
-    stage="stage-b",
-    runner_config="1-gpu-xpu",
-    disabled="EAGLE3 numerical parity mismatches on XPU",
-)
+register_xpu_ci(est_time=360, stage="stage-b", runner_config="1-gpu-xpu")
 
 _is_xpu = is_xpu()
 
@@ -26,6 +21,7 @@ _is_xpu = is_xpu()
 class _Eagle3ParityBase(Eagle3Base):
     """Shared knobs for EAGLE3 parity variants; no test methods."""
 
+    enable_deterministic_inference = True
     env_overrides = ((envs.SGLANG_ENABLE_STRICT_MEM_CHECK_DURING_BUSY, 1),)