ci: decouple stage and runner for cuda registry (#25197)

test/registered/debug_utils/test_cuda_coredump.py

@@ -12,7 +12,8 @@ from sglang.test.ci.ci_register import register_cuda_ci
 
 register_cuda_ci(
     est_time=10,
-    suite="stage-a-test-1-gpu-small",
+    stage="stage-a",
+    runner_config="1-gpu-small",
     disabled="Manual only: triggers intentional CUDA crash for coredump verification",
 )
 

test/registered/debug_utils/test_tensor_dump_forward_hook.py

@@ -19,7 +19,8 @@ from sglang.test.ci.ci_register import register_amd_ci, register_cuda_ci
 
 register_cuda_ci(
     est_time=9,
-    suite="stage-b-test-1-gpu-small",
+    stage="stage-b",
+    runner_config="1-gpu-small",
     disabled="Test uses pytest-style function without TestCase class - see #17145",
 )
 register_amd_ci(