Update Nodes.qll

Applied suggestions

Co-Authored-By: Asger F <316427+asgerf@users.noreply.github.com>

Author: Napalys

javascript/ql/lib/semmle/javascript/dataflow/Nodes.qll

@@ -1242,11 +1242,12 @@ module ClassNode {
    */
   class FunctionStyleClass extends Range, DataFlow::ValueNode {
     override AST::ValueNode astNode;
-    AbstractFunction function;
+    AbstractCallable function;
 
     FunctionStyleClass() {
       // ES6 class case
-      astNode instanceof ClassDefinition
+      astNode instanceof ClassDefinition and
+      function.(AbstractClass).getClass() = astNode
       or
       // Function-style class case
       astNode instanceof Function and

javascript/ql/test/library-tests/Classes/tests.expected

@@ -194,6 +194,7 @@ test_ConstructorDefinitions
 | tst.js:11:9:11:8 | constructor() {} |
 test_ClassNodeConstructor
 | dataflow.js:4:2:13:2 | class F ... \\n\\t\\t}\\n\\t} | dataflow.js:4:12:4:11 | () {} |
+| dataflow.js:4:12:4:11 | () {} | dataflow.js:4:12:4:11 | () {} |
 | fields.js:1:1:4:1 | class C ...  = 42\\n} | fields.js:1:9:1:8 | () {} |
 | points.js:1:1:18:1 | class P ... ;\\n  }\\n} | points.js:2:14:5:3 | (x, y)  ...  y;\\n  } |
 | points.js:20:1:33:1 | class C ... ;\\n  }\\n} | points.js:21:14:24:3 | (x, y,  ...  c;\\n  } |