non-abstract class 'StethoHttpClientRequest' is missing implementations for HttpClientRequest.abort

```
./../Tools/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_stetho-0.5.0/lib/src/http_client_request.dart:10:7: Error: The non-abstract class 'StethoHttpClientRequest' is missing implementations for these members:
- HttpClientRequest.abort
Try to either
- provide an implementation,
- inherit an implementation from a superclass or mixin,
- mark the class as abstract, or
- provide a 'noSuchMethod' implementation.

class StethoHttpClientRequest implements HttpClientRequest {
^^^^^^^^^^^^^^^^^^^^^^^
org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:2045:8: Context: 'HttpClientRequest.abort' is defined here.
void abort([Object? exception, StackTrace? stackTrace]);
^^^^^
```

this is for sdk: ">=2.1.0 <3.0.0"

Start in lib/src/http_client_request.dart, where StethoHttpClientRequest implements HttpClientRequest, and compare the class with the SDK declaration of HttpClientRequest.abort shown in the report. Add the missing interface implementation and verify that the package builds against the stated Dart SDK range.

Written by the indexing model from the issue text.