[fx][const fold] Add test/example for skipping quant/dequant pattern (#68378)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68378
Add test/example for skipping quant/dequant pattern
Reviewed By: jfix71
Differential Revision: D32410544
fbshipit-source-id: e63419a01a097e4c570c3861d79d573cabc0b294
