[pytorch] Minor: avoid acquiring GIL twice in PyRRef::localValue() (#32785)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32785
Add PythonRpcHandler::handleExceptionWithGIL() so that in PyRRef::localValue(),
we don't need to release the GIL and re-acquire the following line.
ghstack-source-id: 97418465
Test Plan: existing test coverage
Differential Revision: D19626195
fbshipit-source-id: db694d04b078811f819626789e1e86f1b35adb5b
