Fix soft regression in scriptlets proxying fetch()

Related commit:
13612d1d29

Related issue:
uBlockOrigin/uAssets#30158

Author: gorhill

src/js/resources/utils.js

@@ -67,7 +67,7 @@ export function collateFetchArgumentsFn(resource, options) {
     const props = [
         'body', 'cache', 'credentials', 'duplex', 'headers',
         'integrity', 'keepalive', 'method', 'mode', 'priority',
-        'redirect', 'referrer', 'referrerPolicy', 'signal', 'url'
+        'redirect', 'referrer', 'referrerPolicy', 'url'
     ];
     const out = {};
     if ( collateFetchArgumentsFn.collateKnownProps === undefined ) {
@@ -84,7 +84,12 @@ export function collateFetchArgumentsFn(resource, options) {
     ) {
         out.url = `${resource}`;
     } else {
-        collateFetchArgumentsFn.collateKnownProps(resource, out);
+        let clone;
+        try {
+            clone = safe.Request_clone.call(resource);
+        } catch {
+        }
+        collateFetchArgumentsFn.collateKnownProps(clone || resource, out);
     }
     if ( typeof options === 'object' && options !== null ) {
         collateFetchArgumentsFn.collateKnownProps(options, out);