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/HiddenPluginEvent.webidl

@@ -0,0 +1,13 @@
+// invalid widl
+// interface PluginTag;
+
+[Constructor(DOMString type, optional HiddenPluginEventInit eventInit), ChromeOnly]
+interface HiddenPluginEvent : Event
+{
+  readonly attribute PluginTag? tag;
+};
+
+dictionary HiddenPluginEventInit : EventInit
+{
+  PluginTag? tag = null;
+};