Augmentation libraries: Augmented constructor initializers appear to be ignored.

[rrousselGit]

Consider:

@Freezed()
class A {
  A(Map<String, Object?> map);
}

Where the generated code is:

augment class A {
  augment A(
    prefix0.Map<prefix0.String, prefix0.Object?> map, 
  ) : map = {'c': 42}; // Notice how we hard-coded the content

  final prefix0.Map<prefix0.String, prefix0.Object?> map;
}

In theory, print(A({'a': 0}).map should always print {'c': 42}. But somehow, this prints {'a': 0}.

This makes no sense, as the parameter is unused here, and the field initialization is hard-coded.