fix(http): avoid abort a request when fetch operation is completed (#37367)

`abort` method is calling, even if fetch operation is completed

Fixes https://github.com/angular/angular/issues/36537

PR Close #37367

packages/common/http/src/xhr.ts

@@ -339,7 +339,9 @@ export class HttpXhrBackend implements HttpBackend {
         }
 
         // Finally, abort the in-flight request.
-        xhr.abort();
+        if (xhr.readyState !== xhr.DONE) {
+          xhr.abort();
+        }
       };
     });
   }