RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/web-sys/webidls/enabled/PaymentMethodChangeEvent.webidl

@@ -0,0 +1,13 @@
+[Constructor(DOMString type, optional PaymentMethodChangeEventInit eventInitDict),
+ SecureContext,
+ Exposed=Window,
+ Func="mozilla::dom::PaymentRequest::PrefEnabled"]
+interface PaymentMethodChangeEvent : PaymentRequestUpdateEvent {
+    readonly attribute DOMString methodName;
+    readonly attribute object?   methodDetails;
+};
+
+dictionary PaymentMethodChangeEventInit : PaymentRequestUpdateEventInit {
+    required DOMString methodName;
+             object?   methodDetails;
+};