Incorrect `invalid_constant` error when using an import prefix

[rrousselGit]

Consider:

import 'foo.dart' as prefix;
import 'foo.dart';

class Bar {
  const Bar():
    value = prefix.Foo.staticVariable;

  final Object? value;
}

class Baz {
  const Baz():
    value = Foo.staticVariable;

  final Object? value;
}

While Baz works, Bar doesn't: