[BugFix] Sample the inclusive high bound in integer Bounded.rand

[jayzuccarelli]

Bounded treats both bounds as inclusive (is_in and project accept high), but the integer branch of rand scaled a [0, 1) draw by high - low and cast it to the target dtype. The cast truncates toward zero, so high was never drawn, Bounded(0, 1, dtype=torch.int64).rand() always returned 0, and ranges that straddle zero never produced low and drew 0 twice as often as other values.

Draw floor(u * (high - low + 1)) + low instead, clamped to high.

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❌ 1 Cancelled Job, 2 Unrelated Failures

As of commit dfbeae8 with merge base 71a4143 ():

CANCELLED JOB - The following job was cancelled. Please retry:

• Tutorials Tests on Linux / tests (3.12, 13.0) / linux-job (gh)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Unit-tests on Linux / tests-gpu (3.12, 13.0, 2) / linux-job (gh) (trunk failure)
  test/test_inference_server.py::TestProcessSlotTransport::test_server_batched_pass_on_cuda[True]
• Unit-tests on Linux / tests-stable-gpu (3.12, 13.0, 2) / linux-job (gh) (trunk failure)
  test/test_inference_server.py::TestProcessSlotTransport::test_server_batched_pass_on_cuda[True]

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[theap06]

Thanks for contributing and catching this! LGTM.