Once::wait_force
use
The previous commit updated `rustfmt.toml` appropriately. This commit is the outcome of running `x fmt --all` with the new formatting options.
This stabilizes: * `OnceState` * `OnceState::is_poisoned()` (previously named `poisoned()`) * `Once::call_once_force()` `poisoned()` was renamed because the new name is more clear as a few people agreed and nobody objected. Closes #33577
Also doing fmt inplace as requested.
