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

src/compiler/verifier.cc

Index: src/compiler/verifier.cc
diff --git a/src/compiler/verifier.cc b/src/compiler/verifier.cc
index fcdfbd9a30f674e48acc18ba3ff89ff5f845aa74..87f90f135c32db612a14c55ab3c1bd338b521ad3 100644
--- a/src/compiler/verifier.cc
+++ b/src/compiler/verifier.cc
@@ -1087,6 +1087,10 @@ void Verifier::Visitor::Check(Node* node) {
       CheckValueInputIs(node, 0, Type::Boolean());
       CheckNotTyped(node);
       break;
+    case IrOpcode::kCheckInternalizedString:
+      CheckValueInputIs(node, 0, Type::Any());
+      CheckTypeIs(node, Type::InternalizedString());
+      break;
     case IrOpcode::kCheckMaps:
       // (Any, Internal, ..., Internal) -> Any
       CheckValueInputIs(node, 0, Type::Any());