Unwrap type if needed on dcall

pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart

Index: pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart b/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart
index 68d8fd043781de47e7957051c8067abbc6152953..6f4236c65a8f00db2fbe669bfa4c72b835f1a026 100644
--- a/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart
+++ b/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.dart
@@ -137,6 +137,11 @@ dput(obj, field, value) {
 _checkApply(type, actuals) => JS(
     '',
     '''(() => {
+  // TODO(vsm): Remove when we no longer need mirrors metadata.
+  // An array is used to encode annotations attached to the type.
+  if ($type instanceof Array) {
+    $type = type[0];
+  }
   if ($actuals.length < $type.args.length) return false;
   let index = 0;
   for(let i = 0; i < $type.args.length; ++i) {