This fixes Trials Fusion often crashing when disconnecting a controller while there are more still connected.
-- v10: hidclass: Set Status for pending IRPs of removed devices to STATUS_DEVICE_NOT_CONNECTED. ntdll/tests: Test IOSB values of the cancel operation. ntdll/tests: Add more NtCancelIoFile[Ex]() tests. ntdll: Wait for all asyncs to handle cancel in NtCancelIoFile[Ex](). server: Introduce a separate server object for the async cancel operation. server: Keep cancelled async in a separate list. server: Introduce a find_async_from_user helper. ntdll: Factor out a cancel_io() function.