[VM/nnbd] Fix canonicalization of type 'Never' (fixes #40249).

Change-Id: Ib3dc4fc6d31aeadb331fda017fc8b4f1a8ae8221
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134382
Reviewed-by: Alexander Markov <[email protected]>
Commit-Queue: Régis Crelier <[email protected]>

Author: crelier

runtime/vm/object.cc

@@ -1041,7 +1041,13 @@ void Object::Init(Isolate* isolate) {
   void_type_->SetCanonical();
 
   cls = never_class_;
-  *never_type_ = Type::NewNonParameterizedType(cls);
+  *never_type_ =
+      Type::New(cls, Object::null_type_arguments(), TokenPosition::kNoSource,
+                Dart::non_nullable_flag() ? Nullability::kNonNullable
+                                          : Nullability::kLegacy);
+  never_type_->SetIsFinalized();
+  never_type_->ComputeHash();
+  never_type_->SetCanonical();
 
   // Since TypeArguments objects are passed as function arguments, make them
   // behave as Dart instances, although they are just VM objects.