[quant][graph] Graph mode quantization support for sigmoid (#36622)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36622
Test Plan:
python test/quantization/test_quantize_script.py test_swap_dequantize_all_ops
Imported from OSS
Differential Revision: D21075255
fbshipit-source-id: 025f432215eaa8acf34d492e7722102ca053abeb
