call method invocation and noSuchMethod forwarder

[sgrekhov]

This issue derieved from the test mentioned in #55803 (comment). I didn't find a separate github item for this issue. Feel free to close this one as a duplicate if there is such one.

class BNSMC {
  // Should be NSM-forwarder.
  int Function(int) get call;

  Object? noSuchMethod(Invocation i) {
    if (i.memberName == #call) {
      print("isMethod=${i.isMethod}"); // false
      print("isGetter=${i.isGetter}"); // true
      return (int x) => x;
    }
    return super.noSuchMethod(i);
  }
}

void main() {
  (BNSMC() as dynamic)(42);
}

Here we have an attempt to invoke a call method, not a getter, so isMethod and isGetter should have opposite values.
cc @lrhn @eernstg to confirm.

[dart-github-bot]

Summary: noSuchMethod incorrectly identifies a call method invocation as a getter, resulting in isMethod being false and isGetter being true. This contradicts expected behavior.