[crankshaft] Re-add kAllowUndefinedAsNaN flag for bitwise binary ops

src/crankshaft/hydrogen-instructions.h

Index: src/crankshaft/hydrogen-instructions.h
diff --git a/src/crankshaft/hydrogen-instructions.h b/src/crankshaft/hydrogen-instructions.h
index 12a6d92386aba8da0b7a94f7e16c0068e61f4199..c889bed7cb65a77fb61c7e15c778bc82a6d6f748 100644
--- a/src/crankshaft/hydrogen-instructions.h
+++ b/src/crankshaft/hydrogen-instructions.h
@@ -3740,6 +3740,7 @@ class HBitwiseBinaryOperation : public HBinaryOperation {
       : HBinaryOperation(context, left, right, type) {
     SetFlag(kFlexibleRepresentation);
     SetFlag(kTruncatingToInt32);
+    SetFlag(kAllowUndefinedAsNaN);
     SetAllSideEffects();
   }