Auto merge of #13895 - lautat:dom-response-clone-step-1, r=KiChjang

Implement Step 1 of Response API Clone Method

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Implements first step of response API Clone method. Response Clone test expectations have been updated. Fixes issue #13888.

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #13888.

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- [X] There are tests for these changes

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components/script/dom/response.rs

@@ -298,7 +298,9 @@ impl ResponseMethods for Response {
     // https://fetch.spec.whatwg.org/#dom-response-clone
     fn Clone(&self) -> Fallible<Root<Response>> {
         // Step 1
-        // TODO: This step relies on body and stream, which are still unimplemented.
+        if self.is_locked() || self.body_used.get() {
+            return Err(Error::Type("cannot clone a disturbed response".to_string()));
+        }
 
         // Step 2
         let new_response = Response::new(&self.global());

tests/wpt/metadata/fetch/api/response/response-clone.html.ini

@@ -6,9 +6,6 @@
   [Check cloned response's body]
     expected: FAIL
 
-  [Cannot clone a disturbed response]
-    expected: FAIL
-
   [Cloned responses should provide the same data]
     expected: FAIL