[Static Runtime][DI] Add variadic grouped_accessor_op (#66289)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66289
Add a variadic version of `grouped_accessor_op` to eliminate list construction overhead and associated refcount bumps in static runtime.
Test Plan:
Accuracy test with model 294738512_40: passes with 0 errors.
Accuracy test with model 296213501_65 (has V2 op): passes with 0 errors.
**Perf impact**
TW replayer test w/ 800 QPS (stacked with D31620408) shows ~5% CPU decrease for storage tier.
Results:
{F673610665}
Reviewed By: hlu1
Differential Revision: D31482816
fbshipit-source-id: 14393da122cefd094c3e4f423beb897c1d17b32c
