[CI] Move tests onto the right CI stages (#34074)

Co-authored-by: Baizhou Zhang <sobereddiezhang@gmail.com>

test/run_suite.py

@@ -188,12 +188,20 @@ NIGHTLY_SUITES = {
 OTHER_SUITES = {
     HWBackend.CPU: [
         "default",
+        # `stage="weekly"`, dispatched by weekly-test-cpu.yml.
+        "weekly-test-cpu",
     ],
     HWBackend.CUDA: [
         "stress",
         # `stage="weekly"` -- same shape. The three dicts group names for
-        # readability only; validation reads their union.
+        # readability only; validation reads their union. One entry per row of
+        # the matrix in weekly-test-nvidia.yml.
+        "weekly-test-1-gpu-large",
+        "weekly-test-2-gpu-large",
+        "weekly-test-4-gpu-h100",
+        "weekly-test-4-gpu-b200",
         "weekly-test-8-gpu-h200",
+        "weekly-test-8-gpu-b200",
     ],
 }