Minor: fix IrDynamicOperatorExpressionImpl double dispatch methods

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDynamicOperatorExpressionImpl.kt

@@ -30,12 +30,14 @@ class IrDynamicOperatorExpressionImpl(
         visitor.visitDynamicOperatorExpression(this, data)
 
     override fun <D> acceptChildren(visitor: IrElementVisitor<Unit, D>, data: D) {
+        receiver.accept(visitor, data)
         for (valueArgument in arguments) {
             valueArgument.accept(visitor, data)
         }
     }
 
     override fun <D> transformChildren(transformer: IrElementTransformer<D>, data: D) {
+        receiver = receiver.transform(transformer, data)
         for (i in arguments.indices) {
             arguments[i] = arguments[i].transform(transformer, data)
         }