x11: fix crash with uim

Let's just not forward events to the IME once the user requested that
it should be disabled, though, still try to change its state explicitly.

Fixes #4082.

src/platform_impl/linux/x11/ime/input_method.rs

@@ -82,9 +82,7 @@ impl InputMethod {
         }
 
         let preedit_style = preedit_style.unwrap_or_else(|| none_style.unwrap());
-        // Always initialize none style even when it's not advertised, since it seems to work
-        // regardless...
-        let none_style = none_style.unwrap_or(Style::None(XIM_NONE_STYLE));
+        let none_style = none_style.unwrap_or(preedit_style);
 
         Some(InputMethod { im, _name: name, preedit_style, none_style })
     }