[JS IR BE] Visit callable reference members in private member lowering

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/PrivateMembersLowering.kt

@@ -62,7 +62,10 @@ class PrivateMembersLowering(val context: JsIrBackendContext) : ClassLoweringPas
                 } ?: expression
             }
 
-            override fun visitFunctionReference(expression: IrFunctionReference) = memberMap[expression.symbol]?.let {
+            override fun visitFunctionReference(expression: IrFunctionReference): IrExpression {
+                super.visitFunctionReference(expression)
+
+                return memberMap[expression.symbol]?.let {
                     transformPrivateToStaticReference(expression) {
                         IrFunctionReferenceImpl(
                             expression.startOffset, expression.endOffset,
@@ -73,8 +76,11 @@ class PrivateMembersLowering(val context: JsIrBackendContext) : ClassLoweringPas
                         )
                     }
                 } ?: expression
+            }
 
             override fun visitPropertyReference(expression: IrPropertyReference): IrExpression {
+                super.visitPropertyReference(expression)
+
                 return if (expression.getter in memberMap || expression.setter in memberMap) {
                     transformPrivateToStaticReference(expression) {
                         IrPropertyReferenceImpl(