In interpolate, give a short name to scale_factor_list (#37169)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37169
This allows some cleanup of the code below by making lines shorter.
ghstack-source-id: 102773593
Test Plan: Existing tests for interpolate.
Reviewed By: kimishpatel
Differential Revision: D21209988
fbshipit-source-id: cffcdf9a580b15c4f1fa83e3f27b5a69f66bf6f7
