Update rasta direct expectations.

pkg/front_end/test/fasta/rasta/unresolved_constructor.dart.direct.expect

 library;
 import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •(dynamic x, dynamic y) → dynamic
+  constructor •(dynamic x, dynamic y) → void
     : super core::Object::•()
     ;
 }
 static method main() → dynamic {
-  invalid-expression;
-  throw core::_unresolvedConstructorError(self::Foo, #Foo.notHere, <dynamic>[], <dynamic, dynamic>{}, null);
+  throw new core::NoSuchMethodError::•(null, #, <dynamic>[], <dynamic, dynamic>{}, null);
+  throw new core::NoSuchMethodError::•(null, #Foo.notHere, <dynamic>[], <dynamic, dynamic>{}, null);
 }