[PyTorch Edge] bytecode version bump to v5 and enable share constant table (#57888)
Summary:
As title, main change:
1. Enable share constant table and reduce model size up to 50%
2. Bump bytecode version from v4 to v5.
3. Add the unittest back. (It was partially removed because `script_module_v5.ptl` bytecode version is v5. When current runtime is v4 and try to load a v5 model, it will raise an error because version is not within the range.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57888
As title
ghstack-source-id: 129255867
Test Plan:
CI
```
buck test papaya/toolkit/frontend/torch/...
buck test mode/opt papaya/integration/service/test/smartkeyboard:smartkeyboard_system_test
```
Reviewed By: raziel, iseeyuan
Differential Revision: D28309381
fbshipit-source-id: 6f5cf4296eaadde913d55f27d5bfb9d1dea2fbaf
