gelu test_eager_equivalence (inductor_default) fails on main

`test_eager_equivalence[nn.functional.gelu, float32, inductor_default]` failing on the main branch, and skipped in code by #190111 to keep CI green.

This issue tracks the underlying failure so it can be fixed and the skip removed.

- Test(s): `test_eager_equivalence[nn.functional.gelu, float32, inductor_default]`
- File: `test/inductor/test_torchinductor_opinfo_properties.py`
- Skip PR: #190111
- Prior DISABLED-bot quarantine: #188840 (in-code skip + this tracking issue preferred over the DISABLED mechanism)

The skip is a plain `unittest.skip`/`skipTest`; please remove it once the failure is fixed.

cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @ipiszy @kadeng @muchulee8 @amjames @chauhang @aakhundov @coconutruben @jataylo

Start with test/inductor/test_torchinductor_opinfo_properties.py and run test_eager_equivalence[nn.functional.gelu, float32, inductor_default] to reproduce the failure. Review the skip added by #190111 and the prior quarantine in #188840. Done means the test passes on main and the plain unittest skip is removed.

Written by the indexing model from the issue text.