[turbofan] Use InternalizedString feedback abstract/strict equality comparisons.

src/type-hints.cc

Index: src/type-hints.cc
diff --git a/src/type-hints.cc b/src/type-hints.cc
index 1c5fe3b8bfef78c972ee8381a0cfd14676acd8e9..4267ab890696e00e7f00114e063c2b876fdb0d9b 100644
--- a/src/type-hints.cc
+++ b/src/type-hints.cc
@@ -36,6 +36,8 @@ std::ostream& operator<<(std::ostream& os, CompareOperationHint hint) {
       return os << "Number";
     case CompareOperationHint::kNumberOrOddball:
       return os << "NumberOrOddball";
+    case CompareOperationHint::kInternalizedString:
+      return os << "InternalizedString";
     case CompareOperationHint::kString:
       return os << "String";
     case CompareOperationHint::kAny: