Bump PT pin to 20241028

[Jack-Khuu]

Bumping pin to wheel that doesn't expire for a while (resolved by landing #1367).

---

Accounting for export moving to training IR:

• Original attempt Use training IR in torchchat export #1319

Note: The Segfaults in test-cpu-aoti are fixed in pytorch/pytorch#139411 and will be picked up in #1367. Tests will be bypassed until that (hopefully soon)

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/torchchat/1419

• 📄 Preview Python docs built from this PR

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❌ 2 New Failures, 1 Pending

As of commit 63aeb5e with merge base 4fdbe10 ():

NEW FAILURES - The following jobs have failed:

• pull / test-cpu-aoti (aarch64, stories15M) (gh)
  Process completed with exit code 1.
• pull / test-cpu-aoti (x86_64, stories15M) (gh)
  Process completed with exit code 1.

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