[turbofan] Replace uninitialized JSConstruct nodes with SOFT deopt.

src/compiler/js-type-hint-lowering.h

Index: src/compiler/js-type-hint-lowering.h
diff --git a/src/compiler/js-type-hint-lowering.h b/src/compiler/js-type-hint-lowering.h
index a72b88883e007e7b0e83f248ed81ec3f7b84f219..50779c9f3c1526e3b9dfa5afb09cf2e500b7e51d 100644
--- a/src/compiler/js-type-hint-lowering.h
+++ b/src/compiler/js-type-hint-lowering.h
@@ -69,6 +69,11 @@ class JSTypeHintLowering {
                                 int arg_count, Node* effect, Node* control,
                                 FeedbackSlot slot) const;
 
+  // Potential reduction of construct operations.
+  Reduction ReduceConstructOperation(const Operator* op, Node* const* args,
+                                     int arg_count, Node* effect, Node* control,
+                                     FeedbackSlot slot) const;
+
   // Potential reduction of property access operations.
   Reduction ReduceLoadNamedOperation(const Operator* op, Node* obj,
                                      Node* effect, Node* control,