tree 3ece55749a1831cfe5c46fe669ddb4e840688b8e
parent 7b87d959346cab4ab9829724efee377f7fb254ed
author Dino Radakovic <dinor@google.com> 1715227139 -0700
committer Copybara-Service <copybara-worker@google.com> 1715227194 -0700

`any_invocable`: Clean up #includes

- remove [<initializer_list>](https://en.cppreference.com/w/cpp/header/initializer_list) from internal header. It declares `std::initializer_list`, `std::begin` and `std::end`, none of which are used there
- add `absl/base/attributes.h` to the internal header because it provides `ABSL_FALLTHROUGH_INTENDED`
- add [<functional>](https://en.cppreference.com/w/cpp/header/functional) to the public header, because it provides `std::reference_wrapper`

PiperOrigin-RevId: 632018125
Change-Id: Icf7a9c8a920c9c076ef416ea80995e3a81ce3e81