script: Pass &mut JSContext to FetchResponseListener::process_response (#43259)

Add the cx parameter to `fn process_response` in the
`FetchResponseListener` trait and the traits that that interface change
requires. Chose to add it as the first parameter, following the same
order that `FetchResponseListener::process_response_eof` uses.

Testing: Checked that servo builds locally as well as `./mach fmt` and
`./mach test-tidy`. I don't think more tests are needed as we are not
introducing new functionality
Fixes: #42840

---------

Signed-off-by: Javier Olaechea <pirata@gmail.com>

components/script/dom/html/htmlscriptelement.rs

@@ -341,7 +341,12 @@ impl FetchResponseListener for ClassicContext {
     // TODO(KiChjang): Perhaps add custom steps to perform fetch here?
     fn process_request_eof(&mut self, _: RequestId) {}
 
-    fn process_response(&mut self, _: RequestId, metadata: Result<FetchMetadata, NetworkError>) {
+    fn process_response(
+        &mut self,
+        _: &mut js::context::JSContext,
+        _: RequestId,
+        metadata: Result<FetchMetadata, NetworkError>,
+    ) {
         self.metadata = metadata.ok().map(|meta| {
             self.response_was_cors_cross_origin = meta.is_cors_cross_origin();
             match meta {