[stubs] Use CSA::IsHeapNumberMap() instead of manual map comparing.

src/interpreter/interpreter-assembler.cc

Index: src/interpreter/interpreter-assembler.cc
diff --git a/src/interpreter/interpreter-assembler.cc b/src/interpreter/interpreter-assembler.cc
index 41e6bb81baa60e90fc20dc7fbbcb5da31b177f59..34b40ec4f0115038d28af5451f5fa97826404e7d 100644
--- a/src/interpreter/interpreter-assembler.cc
+++ b/src/interpreter/interpreter-assembler.cc
@@ -1112,8 +1112,8 @@ Node* InterpreterAssembler::TruncateTaggedToWord32WithFeedback(
       Label if_valueisheapnumber(this),
           if_valueisnotheapnumber(this, Label::kDeferred);
       Node* value_map = LoadMap(value);
-      Branch(WordEqual(value_map, HeapNumberMapConstant()),
-             &if_valueisheapnumber, &if_valueisnotheapnumber);
+      Branch(IsHeapNumberMap(value_map), &if_valueisheapnumber,
+             &if_valueisnotheapnumber);
 
       Bind(&if_valueisheapnumber);
       {