Add sigmoid to one-to-one annotator in ArmQuantizer (#6047)

Summary:
Instead of fixed qspec, sigmoid then becomes annotated with the q-spec from the Quantization fix, similar to other table implemented operators.

This fixes the issues introduced by
https://github.com/pytorch/executorch/issues/5832

Change-Id: I7afccf2036e3bdabea71d3f90b79a04b7f522e1f

Pull Request resolved: https://github.com/pytorch/executorch/pull/6047

Reviewed By: mergennachin

Differential Revision: D64426085

Pulled By: digantdesai

fbshipit-source-id: 6854e389b94af44d036c25862acb9c46192f62ea