script: Rename CanGc::note() to CanGc::deprecated_note() (#44081)

Per the suggestion in

https://servo.zulipchat.com/#narrow/channel/263398-general/topic/PSA.3A.20avoid.20new.20usages.20of.20CanGc.20whenever.20possible/near/583995807
to mark this method as deprecated and make clear it shouldn't be used
anymore, as alternatives exist.

Part of #40600

Testing: It compiles

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>

components/script/module_loading.rs

@@ -388,7 +388,7 @@ fn continue_dynamic_import(
                 Some(Box::new(OnRejectedHandler {
                     promise: inner_promise,
                 })),
-                CanGc::note(),
+                CanGc::deprecated_note(),
             );
             let in_realm = InRealm::Already(&in_realm_proof);
             evaluate_promise.append_native_handler(&handler, in_realm, CanGc::from_cx(cx));