winit 0.30.6 broke AccessKit on Windows

[mwcampbell]

To reproduce, in this repo, update winit to 0.30.6 with this command:

cargo update --precise 0.30.6 winit

Then build and run the simple example under platforms/winit. The focused window isn't announced. Updating to 0.30.5 using an appropriately modified version of the above command shows that 0.30.5 didn't have this problem.

I'm treating this issue as critical. I'm treating it as an AccessKit bug until we know for sure that it can only be fixed in winit.

[DataTriny]

Fixed by rust-windowing/winit#4058

Good job Matt! I guess we should keep this one open until winit 0.30.8 is released.