Pin Modal torch-latest to OCI and cover PR open events (#8770)

Pin Modal Sandbox placement to OCI and report the required PR-side check for opened and reopened pull requests. Keep GPU testing on merge queue, nightly, and manual runs.

Signed-off-by: Masahiro Tanaka <tanaka.masahiro@gmail.com>

Author: tohtana

.github/workflows/modal-torch-latest.yml

@@ -45,7 +45,7 @@ on:
     - cron: '0 10 * * *'
 
   pull_request_target:
-    types: [review_requested, ready_for_review, synchronize]
+    types: [opened, reopened, review_requested, ready_for_review, synchronize]
     branches:
       - master
 

ci/test_torch_latest.py

@@ -427,6 +427,7 @@ def test_remote_plan_is_structural_and_preserves_order_and_scope():
 
 def test_sandbox_kwargs_are_fixed_and_secret_free():
     kwargs = torch_latest.build_sandbox_kwargs("image")
+    assert kwargs["cloud"] == "oci"
     assert kwargs["gpu"] == "l40s:2"
     assert kwargs["timeout"] == 7200
     assert torch_latest.SANDBOX_ACQUIRE_TIMEOUT_SECONDS == 1800

ci/torch_latest.py

@@ -439,6 +439,7 @@ def build_sandbox_kwargs(image: Any) -> dict[str, Any]:
         "unencrypted_ports": [],
         "proxy": None,
         "block_network": False,
+        "cloud": "oci",
         "gpu": "l40s:2",
         "timeout": SANDBOX_TIMEOUT_SECONDS,
     }