[CI] Do not compare two eager run results against fp64 result (#95616)
Summary: When running the benchmark test with --accuracy, two eager runs
should return the same result. If not, we want to detect it early, but
comparing against fp64_output may hide the non-deterministism in eager.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95616
Approved by: https://github.com/ZainRizvi
