Cadence ops: Support quantized gru

[DrJessop]

Summary: As titled.

Differential Revision: D84855084

[pytorch-bot]

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❌ 6 New Failures, 2 Unrelated Failures

As of commit f04eaec with merge base efccca4 ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 10713ff19f0cc0db769a51fa5f244f1e64b2855599e64014a9eff2f4dee111c9 /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t d149435753ef23ba48346b93b33aaa2270aa5f5771b75dae9001f6341bc767e7 /exec failed with exit code 1
• Test CUDA Builds / export-voxtral-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t 928924d164921588d0a15c779cb6cb8d948aac550d8735e3e335affe648b3683 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t 55c98667460cde717136b3dc68573cd1dc817a39e441494f863a7b34189175c6 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-weight-only / linux-job (gh)
  RuntimeError: Command docker exec -t 62973878a58eef3be92c01c698e54126100bdbdbcf3a7f08b605c049036e3e5c /exec failed with exit code 2
• Test Metal Backend / export-voxtral-metal-artifact / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / unittest / linux / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following job failed but was present on the merge base:

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

• pull / unittest-editable / linux / linux-job (gh) (trunk failure)

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@DrJessop has exported this pull request. If you are a Meta employee, you can view the originating Diff in D84855084.

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