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/js-sys/tests/wasm/SharedArrayBuffer.js

@@ -0,0 +1,3 @@
+exports.is_shared_array_buffer_supported = function () {
+    return typeof SharedArrayBuffer === 'function';
+};