Enable eval for pt2e quantization (#3652)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/3652

Have the eval framework to work with pt2e quantizer to unblock measuring the accuracy for qnn quantizer

Reviewed By: Jack-Khuu

Differential Revision: D57316602

fbshipit-source-id: ca2b6f0dc6a6ebb4f2f323d09c27c20978cec569