virtio-devices: reevaluate #[allow] attributes

Convert the still-needed #[allow]s to #[expect] so they warn if the
lints stop firing.

Part of #8326.

Signed-off-by: Tushar Khatri <hello@tusharkhatri.in>

virtio-devices/src/console.rs

@@ -131,7 +131,7 @@ impl Endpoint {
 }
 
 impl ConsoleEpollHandler {
-    #[allow(clippy::too_many_arguments)]
+    #[expect(clippy::too_many_arguments)]
     fn new(
         mem: GuestMemoryAtomic<GuestMemoryMmap>,
         input_queue: Queue,