[turbofan] Replace uninitialized JSConstruct nodes with SOFT deopt.

test/mjsunit/ignition/throw-if-not-hole.js

Index: test/mjsunit/ignition/throw-if-not-hole.js
diff --git a/test/mjsunit/ignition/throw-if-not-hole.js b/test/mjsunit/ignition/throw-if-not-hole.js
index ce322563853d8cbea8fd8bfbaf2c9d949aed17b6..672e42ddf59528be696b45b28611e234aebe8ed9 100644
--- a/test/mjsunit/ignition/throw-if-not-hole.js
+++ b/test/mjsunit/ignition/throw-if-not-hole.js
@@ -18,6 +18,8 @@ class B extends A {
 
 test = new B(0);
 test = new B(0);
+assertThrowsEquals(() => {new B(1)}, ReferenceError());
+assertThrowsEquals(() => {new B(1)}, ReferenceError());
 %OptimizeFunctionOnNextCall(B);
 test = new B(0);
 assertOptimized(B);