Fix CPU vectorized eq and ne operations for complex types (#97374)
The comparison of both the real and imag parts need to be combined and then the result must have the real number be 1 for true and 0 for false while the imag number must always be 0.
Fixes https://github.com/pytorch/pytorch/issues/75950
Pull Request resolved: https://github.com/pytorch/pytorch/pull/97374
Approved by: https://github.com/jgong5, https://github.com/kit1980