cargo: Upgrade keyboard-types to 0.8.0 and xcomponent-sys to 0.3.4 (#38375)

With some adjustment for `NamedKey`. The two crates need to be bumped
together to avoid duplicate of `keyboard-types` action.

---------

Signed-off-by: PotatoCP <Kenzie.Raditya.Tirtarahardja@huawei.com>

components/script_bindings/conversions.rs

@@ -628,6 +628,7 @@ pub(crate) unsafe fn windowproxy_from_handlevalue<D: crate::DomTypes>(
     Ok(DomRoot::from_ref(&*ptr))
 }
 
+#[allow(deprecated)]
 impl<D: crate::DomTypes> EventModifierInit<D> {
     pub fn modifiers(&self) -> Modifiers {
         let mut modifiers = Modifiers::empty();