[Kernel] Flashinfer correctness fix for v0.1.3

[LiuXiaoxuanPKU]

Reported by @felixzhu555 , is_profile_run is buggy in flashinfer backend, which will fail flashinfer v0.1.3. This PR fixes this, and update CI flashinfer version to v1.0.3.

[github-actions[bot]]

👋 Hi! Thank you for contributing to the vLLM project. Just a reminder: PRs would not trigger full CI run by default. Instead, it would only run fastcheck CI which consists a small and essential subset of CI tests to quickly catch errors. You can run other CI tests on top of default ones by unblocking the steps in your fast-check build on Buildkite UI.

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🚀

[LiuXiaoxuanPKU]

/ready

[comaniac]

CI failure seems like a real bug

[2024-08-09T04:52:05Z]   File "/usr/local/lib/python3.10/dist-packages/flashinfer/prefill.py", line 791, in begin_forward
--
  | [2024-08-09T04:52:05Z]     self._wrapper.begin_forward(
  | [2024-08-09T04:52:05Z] RuntimeError: CHECK_EQ(paged_kv_indptr.size(0), batch_size + 1) failed. 1 vs 257

[exceedzhang]

@LiuXiaoxuanPKU It's bugs