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/unstable/WritableStream.webidl

@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Source: https://streams.spec.whatwg.org/#ws-class-definition
+ */
+ 
+[Exposed=(Window,Worker,Worklet), Transferable]
+interface WritableStream {
+  constructor(optional object underlyingSink, optional QueuingStrategy strategy = {});
+
+  readonly attribute boolean locked;
+
+  Promise<undefined> abort(optional any reason);
+  Promise<undefined> close();
+  WritableStreamDefaultWriter getWriter();
+};