Fix conv2d bias INT48 type hint removed by fusing placeholder nods

[3l1]

Summary: Fix conv2d bias INT48 type hint removed by fusing placeholder nods

Reviewed By: Ninja91

Differential Revision: D84948170

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15257

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❗ 1 Active SEVs

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• [ROCm][CI] Machines under the label linux.rocm.gpu.2 are undergoing maintenance.

❌ 4 New Failures, 3 Unrelated Failures

As of commit 7cdc650 with merge base 296e07f ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for backends/arm/_passes/fuse_equal_placeholders_pass.py:
• pull / test-multimodal-linux (gemma3-4b) / linux-job (gh)
  RuntimeError: Command docker exec -t 21494244e85c3c001ff1f1a56a64fe9a9eef30f5acd21b9de41097c90d73e695 /exec failed with exit code 139
• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh)
  RuntimeError: Command docker exec -t 15e517a06984bc6ed4dadece1208e674d99e538107c385ee57c29c7c438acdef /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t c27d65a2a74693dd46375856dffdfcdbecb344806bc3d5bc9f2856b3382a1ef6 /exec failed with exit code 1

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

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

• pull / android / run-emulator (gh) (trunk failure)
  The process '/usr/bin/sh' failed with exit code 255
• pull / unittest / linux / linux-job (gh) (trunk failure)
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)

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[meta-codesync]

@3l1 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D84948170.

[3l1]

@pytorchbot label "release notes: none"

[digantdesai]

Yeah this is a problem for 'non-standard' meta keys.

[digantdesai]

Is there a way to write a conv2d test which fails without this change, just to safeguard.

[digantdesai]

Good debugging @3l1.

CC: @per as FYI