`@useResult` annotation doesn't work when Callable class is invoked

[maRci002]

@useResult annotation works fine when a callable class' instance is invoked explicitly by calling instance.call(...) however when the instance is invoked implicitly instance(...) the anyalazer won't complain.

class Foo {
  const Foo();

  @useResult
  int call() {
    return 42;
  }
}

void main() {
  final foo = const Foo();
  foo.call();
  foo(); // BAD: return value is silently ignored
}

dart --version

Dart SDK version: 2.16.2 (stable) (Tue Mar 22 13:15:13 2022 +0100) on "windows_x64"

[asashour]

https://dart-review.googlesource.com/c/sdk/+/242868