Make memory allocation macros windows-compatible (#4071)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/4071

Make windows-compatible versions of memory allocation macros `ET_TRY_ALLOCATE_OR`, `ET_TRY_ALLOCATE_INSTANCE_OR`, and `ET_TRY_ALLOCATE_LIST_OR` by using lambda functions. Previously the preprocessing did not work because the windows compiler does not support expression statements. Keep the original implementations to maintain compatibility with other call-sites, which will eventually be refactored.

Then refactor the `memory_allocator_test.cpp` to migrate away from using `ET_TRY_ALLOCATE_OR`, `ET_TRY_ALLOCATE_INSTANCE_OR`, and `ET_TRY_ALLOCATE_LIST_OR`.

Reviewed By: dbort

Differential Revision: D58850316

fbshipit-source-id: 9ae4f0ec045afe8370f2d0037a2eee5308a6a6ec