fix(computer): bounded consent-denied portal close inline

The SelectDevices/Start/ConnectToEIS failure arm closes the RemoteDesktop session from inside runtime.block_on, so it cannot use close_session (a nested block_on panics). Bounded it with an inline tokio::time::timeout(CLOSE_TIMEOUT, ...) so a frozen xdg-desktop-portal on the ordinary denied-consent path no longer hangs the worker thread.

Fixes #7884

crates/pi-natives/src/desktop/linux/wayland/libei.rs

@@ -116,7 +116,11 @@ impl Libei {
 				match fd {
 					Ok(fd) => Ok((fd, session)),
 					Err(err) => {
-						let _ = session.close().await;
+						// Already inside `runtime.block_on`, so the `close_session`
+						// helper (itself a `block_on`) would abort with a nested-runtime
+						// panic; bound this consent-denied close inline instead.
+						let _ =
+							tokio::time::timeout(crate::desktop::CLOSE_TIMEOUT, session.close()).await;
 						Err(err)
 					},
 				}