Add missing new.target feature flags (#1929)

test/language/expressions/dynamic-import/assignment-expression/new-target.js

@@ -16,7 +16,7 @@ info: |
         LeftHandSideExpression[?Yield, ?Await] = AssignmentExpression[?In, ?Yield, ?Await]
         LeftHandSideExpression[?Yield, ?Await] AssignmentOperator AssignmentExpression[?In, ?Yield, ?Await]
 flags: [async]
-features: [dynamic-import]
+features: [dynamic-import, new.target]
 ---*/
 
 function ctor() {

test/language/expressions/new.target/asi.js

@@ -4,6 +4,7 @@
 esid: sec-meta-properties-runtime-semantics-evaluation
 es6id: 12.3.8.1
 description: NewTarget is composed of three distinct tokens
+features: [new.target]
 ---*/
 
 var newTarget = null;