Added test for renamed deeply nested enum

c++/src/capnp/encoding-test.c++

@@ -1653,6 +1653,7 @@ TEST(Encoding, HasEmptyStructList) {
 
 TEST(Encoding, NameAnnotation) {
   EXPECT_EQ(2, static_cast<uint16_t>(test::RenamedStruct::RenamedEnum::QUX));
+  EXPECT_EQ(2, static_cast<uint16_t>(test::RenamedStruct::RenamedNestedStruct::RenamedDeeplyNestedEnum::GARPLY));
 
   MallocMessageBuilder message;
   auto root = message.initRoot<test::RenamedStruct>();

c++/src/capnp/test.capnp

@@ -706,6 +706,12 @@ struct TestNameAnnotation $Cxx.name("RenamedStruct") {
   struct NestedStruct $Cxx.name("RenamedNestedStruct") {
     badNestedFieldName @0 :Bool $Cxx.name("goodNestedFieldName");
     anotherBadNestedFieldName @1 :NestedStruct $Cxx.name("anotherGoodNestedFieldName");
+
+    enum DeeplyNestedEnum $Cxx.name("RenamedDeeplyNestedEnum") {
+      quux @0;
+      corge @1;
+      grault @2 $Cxx.name("garply");
+    }
   }
 
   namedUnion :union {